History of the ASTAP, Astrometric stacking program

Questions, feedback, bug reports: ASTAP Forum or send me an email

 astap.png History:

2024-04-12, Doubled the HyperLeda database in size. Note by purpose all objects with size zero have no abbreviation to prevent overlapping annotations. Use the popup menu online link to HyperLeda for identification.

ASTAP 2024.04.11 Development version. Added XISF format (uncompressed to live stacking)

ASTAP 2024.04.09 Development version. Code and algorithm optimisation in photometric calibration.

ASTAP 2024.04.08 Development version. Added median FWHM to the log of the image inspector.

ASTAP 2024.03.28 Development version. Added beside CENTALT also OBJCTALT to output of the batch solve menu.

ASTAP 2024.03.27 Improved option "Comet and stars sharp". Modified the colour smooth routine. Fixed the viewer menu for High DPI  setting.

ASTAP 2024.03.26 Development version. Added new stack option "Comet and stars sharp". Added to pixel math 1 new option called "unsharp mask". 

ASTAP 2024.03.21 Development version. Added HJD to the photometry tab.

ASTAP 2024.03.21 Added HJD option to photometry tab. Fixed for Mac exporting CENTALT in batchmenu.

ASTAP 2024.03.13 Fixed an accuracy problem for astrometric stacking. Fixed image stitching canvas size for images under an angle.

ASTAP 2024.03.12 Development version. Add  airmass and centalt to files for batch menu add SQM value. Replace the 32 bit with 64 bit executable.

ASTAP 2024.03.11 Track and stack works better for images with a rotation drift.

ASTAP 2024.03.08 Development version. Allow OSC images for track and stack.

ASTAP 2024.03.07 Some minor corrections in track and stack function of the blink tab. See video demonstration

ASTAP 2024.03.02 Development version. For Funpack , remove the ( in the file name. Fixed a bug in track & stack if both asteroid and comet data is used.

ASTAP 2024.02.26 Fixed a run time error using the comet and asteroid annotation.

ASTAP 2024.02.25 Added a warning for an obsolete MPC database. Fixed Stack and Track for AstroTif files. 

ASTAP 2024.02.24 Stack and track improved. See popup blink tab and documentation.

ASTAP 2024.02.23 Development version  MPC1992 simplied. Stack and track added to blink tab. Documentation not finished yet.

ASTAP 2024.02.16 First version to create a minor planet MPC1992 report.

ASTAP 2024.02.14 Development version. First version to create a minor planet MPC1992 report.

ASTAP 2024.02.11 Development version. Some minor corrections in photometry and SIP menus.

ASTAP 2024.02.08 Allowed changing value of keyword DATE-OBS. If  change is requested the program will ask for a time shift in hours.

ASTAP 2024.02.08 Fixed two new fatal problems in the photometry tab. Marking the three stars to measure did not work anymore and downloading the online AAVSO stars did not work properly.

ASTAP 2024.02.07 Improved accuracy of SIP polynomial factors. New imaged are now automatically centered in te viewer rather then aligned to the left.

ASTAP 2024.02.03 Added the command line option -extract2. This allows export of all star positions to a .csv file. Removed option -analyse2.

ASTAP 2024.01.30 Overhauled the stack routines to increase stacking speed with about 20%. 

ASTAP 2024.01.27 Development version. More improvements in calculating SIP.. Added keywords PC..

ASTAP 2024.01.25 Development version. More improvements in calculating SIP.

ASTAP 2024.01.24 Development version. More improvements in calculating SIP.

ASTAP 2024.01.24  Fixed a problem in the command line version (CLI). Subpixel routine had a bug since September last year.

ASTAP 2024.01.20  Development version.  Integrated SIP factors in Mosaic building/ image stitching..

ASTAP 2024.01.16  Development version.  Added a full SIP polynomial option for the solver.

ASTAP 2024.01.12  Fixed some menu alignment problems for 4k monitors.

ASTAP 2024.01.11  Development version. Fixed a OSC stacking problem resulting in a run time error.

ASTAP 2024.01.07  Development version. Allowed mosaic batch processing of multiple objects.

ASTAP 2024.01.06  Development version. Allowed a mosaic of raw files.

ASTAP 2024.01.04  Code optimisation.

ASTAP 2024.01.03  Development version. Code optimisation.

ASTAP 2024.01.02  Development version. Added splitter to viewer and stack menu. Reorganised stack window menus.

ASTAP 2024.01.01 Development version. Modified menu alignments

ASTAP 2023.12.30  Improved solver for near celestial pole. Annotation will be now correct for images at +90 or -90 degrees declination. Photometry tab, fixed a problem with filling the abbreviations in the AAVSO report.

ASTAP 2023.12.21 Fixed several bugs in the new multi star photometry routine.

ASTAP 2023.12.16 Development version. New variable star databases. One down to magnitude 15. Some code cleaning solver code.

ASTAP 2023.12.12 Fixed a major problem in ephemerides alignment. Improvements to the "background contour" at  image inspector (F5 menu).

ASTAP 2023.12.11 Development version. Added "background contour" to the image inspector (F5 menu).

ASTAP 2023.12.09 Development version. Photmetry, allowing AAVSO VSX, VSP download for very large FOV but limited to magnitude 12.

ASTAP 2023.12.08 Added the V05 photometry database for large field-of-view. Fixed some inspector menus which where no longer working. Improved annotation of very bright stars. Changed auto database selection.

ASTAP 2023.12.06 Development version. Photmetry, allowed using the local variable database for measuring all AAVSO object visible.

ASTAP 2023.12.05 Development version. Fixed some problem in photometry tab regarding  measuring the magnitudes of all visible AAVSO VSX and VSP stars

ASTAP 2023.12.04 Made repaint of photometry tab more smoother. Fixed copy paste routine which was broken since 2023-09-18.

ASTAP 2023.12.03 Development version. Modified in the photometry tab the  annotation menu and added options to measure the magnitudes of all visible AAVSO VSX and VSP stars. They magnitudes will be added in the listview as additional columns.

2023.11.27  Linux, fixed a reading permission of some D50 database files near the celestial north pole.

ASTAP_2023.11.25 Fixed a tiny magnitude error (0.005 magn) in the V50 photometric database. If you use the V50, download and install a new version from the webpage.

ASTAP_2023.11.17 Fixed manual solving using 2 stars in the popup menu. Improved PA measurement using mouse pointer.

ASTAP_2023.11.16 Development version. Improved ra,dec grid. Fixed a problem for selecting the V50 database for photometry.

ASTAP_2023.11.13 Development version. Added az, alt to status bar. See popup menu statusbar. For large FOV reduced number of deepsky object annotated.

ASTAP_2023.11.12 Development version. Improved angular distance and PA calculation.

ASTAP_2023.11.10a Development version. Added an azimuth altitude grid menu option.

ASTAP_2023.11.10 Improved star detection. Fixed option planetary. Fixed default of Gaia magnitude reporting in "star info to clipboard".

ASTAP_2023.11.01 Development version. Added the possibility to measure asteroid in photometry tab. To make it run you first have to add asteroid annotations to all files. Go to the batch processing and execute menu "Add asteroid and comet annotation" for all files. Then in tab photometry, select all files, click on the first file to plot. Then click on the asteroid to place the Var on the asteroid and click on two reference stars (check and 3 annotation). Then click on the> arrow button.

ASTAP_2023.10.19 Fixed a floating point error for users still having old setting "Maximum number of stars to use"=auto

ASTAP_2023.10.14 Improved image stitching background measurement.

ASTAP_2023.10.13 Fixed image stitching mode which was not working since a week or so.

ASTAP_2023.10.13 Development version. Added the -D command line option to specify a database abbreviation.

ASTAP_2023.10.12 Development version. Modified star level for star detection.

ASTAP_2023.10.11 Development version. Redefined star level for star detection.

ASTAP_2023.10.03 Fixed a false colour filter alarm introduced in previous version.

ASTAP_2023.09.27 In tab pixelmath1 the colour replacement menu was extended with an option to remove coloured hot pixels.

ASTAP_2023.09.26 Improved Sigma Clip stack method.

ASTAP_2023.09.21 Minor corrections.

ASTAP_2023.09.19 Development version, Minor correction displayed text stack button

ASTAP_2023.09.18 New development version Faster processing especially for stacking. This required a lot of code changes. Please report any problem.

ASTAP_2023.09.16 Development version, limited the field of view of AAVSO VSX, VSP access to 3 degrees to avoid error 400 server response.

ASTAP_2023.09.11 Some cosmetic corrections.

Fixed a problem in the image stitching mode.

ASTAP_2023.09.06 Development version For image stitching mode allowed to disable an option "limit background correction"

ASTAP_2023.09.05 For image stitching mode, the canvas size is now set fully automatic. Made the north/east indicator a little larger.

ASTAP_2023.09.03 Development version. Some improvements in photometry animation.

ASTAP_2023.09.02 Development version. Some correction in DATE_AVG reporting. Fixed aperture plotting.

ASTAP_2023.09.01 Added aperture lines to star profile.

Development version. Added keyword DATE-END. Improve reporting of DATE-OBS. Several other small corrections.

ASTAP_2023.08.25 Development version. Added menu option star profile. See viewer menu VIEW, STAR PROFILE.

Development version. Added group stacking to photometry tab.

ASTAP_2023.08.23 Fixed aligment of photometry tab. Fixed reading keyword TIME-OBS. Fixed preserving astrometric solution in stacked files.

Monitor tab, restart is not looking to old files. Some other small improvements in the code.

Fixed .FIT extension to tab monitoring.

ASTAP_2023.08.11 Added .fts extension to tab monitoring.

Update the scroll bars in stack menu.

 Development version. Added temperature tolerance for darks.

ASTAP_2023.08.05 Fixed some problems with the scrollbars

ASTAP_2023.08.04 Reworked scrollbars

ASTAP_2023.07.28 Development version. Added an issue  column in dark and flats tab to report incompatibility reason with the lights

ASTAP_2023.07.09 Reduced streak filter to detection only. Sigma clip is as good. 

ASTAP_2023.07.06 Fixed some minor items.

ASTAP_2023.07.05 Improved streak filter. Fixed a major problem in OSC flat routine introduced 2023-06-17

ASTAP_2023.07.01 Improved streak filter. Fixed a scrollbar in stack menu.

ASTAP_2023.06.29 First version with satellite streak filter.

ASTAP_2023.06.28 Development version. Added advanced satellite streak filter.

ASTAP_2023.06.24 Development version. Made selection point (6 degrees) and warning for G05 database the same to avoid unnecessary warning messages. Added rudimentary streak detection.

ASTAP_2023.06.21 Development version. Stored the fixed value added during calibration or stacking to header with keyword PEDEST_C.  Improved tab  "inspector" report

ASTAP_2023.06.18 Added a filter to filter-name to remove characters like / or \ for saving. 

ASTAP_2023.06.17 Improved flat correction for OSC. Improved several other small items.

ASTAP_2023.06.13 Development version. Photometric calibration can now be saved in header. Added to popup menu of the photometry tab an option for photometric calibration.

ASTAP_2023.06.11 For photometry improved the transformation routine

ASTAP_2023.05.31 For photometry added the button "transformation (auto)". Added input fields for transformation to the AAVSO/BAA report page. Extended the viewer popup menu "star info to clipboard" report with all transformed Gaia magnitudes.

ASTAP_2023.05.28 Development version. Improved viewer popup menu option "star info to clipboard"

ASTAP_2023.05.27 Development version. Improved viewer option "annotate unknown stars"

ASTAP_2023.05.26 Development version. Some improvements in photometry tab. Some improvements in viewer option "annotate unknown stars"

ASTAP_2023.05.19a Fixed a problem in ASTAP inspector  (HFD and HFD outer where the same.

ASTAP_2023.05.19 Development version: Added SDSS transformations for photometry.

ASTAP_2023.05.18 Development version: Added new popup menu "Star info to clipboard" including measured magnitude.

ASTAP_2023.05.16 Development version: Improved flux measurement in popup menu "Show statistics within shape".

ASTAP_2023.05.15 Development version: Code optimisation for star detection and background measurement.

ASTAP_2023.05.09 Fixed a selection problem for the G05.  This version was issued  2023.05.14.  

ASTAP_2023.05.09 Development version. Fixed a minor problem related to inspecting a colour image. The images where displayed in mono after a refresh.

ASTAP_2023.05.04 Added the dust spot removal tool. See Youtube demonstration.

ASTAP_2023.05.02 Development version. Changed the OSC flat application method. Now the flat is by default normalised on the fly.

ASTAP_2023.04.29 Fixed a floating variable problem in Astro-Tiff. Corrected the star density calculation for the V50 and G05. Added command-line version for Android X86 and X86_64.

ASTAP_2023.04.21 Fixed reading ROWORDER keyword for AstroTIFF. The Bayer pattern in auto should now work for all cases. Set  Bayer pattern to auto since old settings could be wrong..

ASTAP_2023.04.19 Fixed wrong orientation of galaxy annotation for flipped images. Added the Bortle scale to the SQM measurement.

ASTAP_2023.04.09 Fixed font popup notifier. Some cosmetic corrections.

ASTAP_2023.04.08 Fixed a slow colour smooth.

ASTAP_2023.04.05 Added to pixel math2 an new menu "Increase nebulosity signal".. Added an export option the the image inspector F4 including RA, DEC and magnitude. See menu F5.

ASTAP_2023.03.30 Cosmetic changes

ASTAP_2023.03.29 Development version. Added a star removal function to the viewer. Restructured  code background calculation. 

ASTAP_2023.03.26 Cosmetic changes.

ASTAP_2023.03.25 Development version. Added Johnson-V, B and Cousins R to viewer. Some fixes.

ASTAP_2023.03.24 Development version. Added Johnson-V, B and Cousins R to photometry.

ASTAP_2023.03.22 Introduced the V50 as replacement for the V17. Introduced G05 for wide field solving.

ASTAP_2023.03.21 Added ellipse shape selection for copy past and for measument of magnitude within area. Just press CTRL or SHIFT prior to pulling the shape with the mouse.


NEWS: New star database d05, D20, d50. The star databases h18, h17 will be phased out:

New star databases called d05, d20 and d50 have been released. Instead of a magnitude limit there will be a star density limit.  These databases are sorted to have a star density up 1000, 2000 or 5000 stars per square degree. This should guarantee that in the star poorest areas there will be sufficient stars for navigation (solving) available. But it keeps the database size moderate in star rich areas. If required stars up to magnitude 21 will be available for navigation (solving).

This will be beneficial for setups with a small field-of view. There should always be enough database stars available for navigation in the sky.

Format will be compatible with the H18. The database sizes for the d05, d20,  D50  are 100, 380 and 850 mbytes. Use the following graph to select one. Selecting a denser database has no real penalty except size.

ASTAP_2023.03.16 Added MZERO keyword. Photometric calibration can be saved. Modification for new databases.

ASTAP_2023.03.14 Development version. Removed online database except for annotation unknown stars.

ASTAP_2023.03.05 Development version. Introduced online database for small field images.

ASTAP_2023.02.27 Fixed mayor magnitude problem introduced in version 2023-02-26 for photometry and annotate unknown star menu

ASTAP_2023.02.27 Fixed measured star magnitude annotation

ASTAP_2023.02.26 Fixed importing XISF files with astrometric solution. Added confidence level to magnitude measurement.

ASTAP_2023.02.17 Added a new popup menu: Simbad deepsky annotation with filter

ASTAP_2023.01.12 Fixed some minor problems for menu option arbitrary rotation and deepsky annotation for flipped images.

ASTAP_2022.12.28 MacOS, stackmenu, more fixes for the keyboard left and right arrow scroll.

ASTAP_2022.12.27 MacOS, removed some counter update fixes since they interfered with operation. Counter update is not always working due to bug in compiler (missing event)

ASTAP_2022.12.26a Fixed a cursor and counting problem for MacOS.

ASTAP_2022.12.26 Large modification for the selection box. Mainly for fixing a problem on MacOS.

ASTAP_2022.12.24 Added for stack menu the left/right arrow button for manual scrolling through the images.

ASTAP_2022.12.20 Fixed header DATE-OBS for option "calibration and alignment only".  "Added missing object name in results tab for option "calibration and alignment only"

ASTAP_2022.12.14  For AAVSO report take filter from header.

ASTAP_2022.12.09  Some minor corrections

ASTAP_2022.12.04  Development version. Replaced in the Mac version CNTRL by Command button. Improved "Tools/Local Adjustments,  colour smooth  

ASTAP_2022.12.01  Development version. Significant code reorganisation. No functionality change.

ASTAP_2022.11.30  Added option to stack in the photometry tab.

ASTAP_2022.11.29a  Development version. Added option to calibrate and extract green channel in photometry tab

ASTAP_2022.11.29  Development version, fixed bug colouring saturated stars of version 2022-11-28. 

ASTAP_2022.11.28  Development version, reduced artifacts in LRGB stacking.

ASTAP_2022.11.25  Cosmetic changes.

ASTAP_2022.11.21  Development version:. Added DATE-OBS to  header for RAW file converted to FITS.

ASTAP_2022.11.16  Some cosmetic changes.

ASTAP_2022.11.14  Inspector, bottom text message background is now black. Added commandline acces to live stack tab with "-stack path"

ASTAP_2022.11.10  Almost identical to version 2022.10.09

ASTAP_2022.11.09  Development version. Worked in menu stack method. Added SNR based on electrons to photometry tab.

ASTAP_2022.11.08  Development version. Added a default for EGAIN if it is missing in the header.

ASTAP_2022.11.07  Development version. Added SNR based on electrons. See popup menu status bar

ASTAP_2022.11.04a  Improved menu option move files to directory name+date. Changed quality measurement to nrstar/sqr(hfd)

ASTAP_2022.11.04  Fixed a time zone correction for batch menu restore file dates. Minor mod  pixel math for  creating test images. Added popup menu option status bar for total ADU reading of stars.

ASTAP_2022.10.22 Automated for stacking the detection of RAW DSLR images.

ASTAP_2022.10.19a Fixed a runt time error if auto-demosaic is activated if a mono files is added. 

ASTAP_2022.10.19  Improved changing header key word values for raw (CR2) and XISF files. Fixed live stacking for raw files (.CR2...)

ASTAP_2022.10.01 Bug in the reporting the field-of-view as soon the image is cropped during solving. So typical for images of a field larger then 5 degrees. The wrong FOV is only reported in the GUI. 

ASTAP_2022.09.27 Improved monitor tab with sensor location. Added one digit to roundness measurment (F3).

ASTAP_2022.09.26 Development version: Some more improvements in monitor tab. Some fine tuning triples mode.

ASTAP_2022.09.25 Development version: Added option solving with triples instead of quad for less then 30 stars. Added an arrow for monitor tab. Fixed angular distance reporting in the fits header.  Several small changes.

ASTAP_2022.09.17 Some cosmetic changes..

ASTAP_2022.09.16 Allow header keyword changes in non-standard FITS files which are not a multiply of 2880 bytes. Cosmetic corrrection for CALSTAT keyword value if bias is missing.

ASTAP_2022.09.12 Some cosmetic changes in the code

ASTAP_2022.09.10 Replace the header symbol by a d since it was converted to unicode.

ASTAP_2022.09.09 Fixed a problem for arbitrary rotating of flipped images. Fixed a problem with angle indication introduced a day ago.

ASTAP_2022.09.08 Fixed reading old style WCS for flipped images. Fixed option N for arbitrary rotation.
ASTAP_2022.09.04 Small modification to allow displaying the first colour image of FITS files containing four colours.
Added shortcuts to the inspector menu (F5)
Programmed unicode characters as replacement for missing icons in Mac version.
 Improved icon indication for statistical selection in tab lights.
Fixed Fuji X-trans sensor demosaic. Fixed sorting a list in Mac version where check mark position is lost.
Fixed some items for photometry tab.
Fixed gain indication/selection dark and flat tab. Fixed some problems introduced 2022-08-02.
Large code restructuring. Please report any problem.
Added limiting magnitude to photometry tab for case AAVSO has no comparison stars. Fixed loosing keyword CALSTAT after stack, save new header
ASTAP_2022.07.31 Fixed error in photometry tab for case AAVSO has no comparison stars.

ASTAP_2022.07.13 Added Simbad online annotation. Fixed some other small online request problems.

ASTAP_2022.07.08 Fixed the batch solve image for macOS. Added TIFF to batch menu bin x2 or x3.

ASTAP_2022.07.07 Improved accuracy emphemeris alignment by storing in fraction of pixels. Some code improvement.
ASTAP_2022.07.03 Some code improvement.
ASTAP_2022.07.02 Added the equinox in the calculation of the mount error.
ASTAP_2022.06.26 Fixed some minor things for 8 bit file stacking. Fixed an error in Mac version caused by the crown in quality column.
ASTAP_2022.06.14 fixed CALSTAT indication if calibration prior to solving was used during stacking.
ASTAP_2022.06.09 Fixed unroundness measurement
ASTAP_2022.06.01 Added mean set temperature to mono stack.
ASTAP_2022.05.29a Improved API link to AAVSO webpage, Var and Check star are named from database
ASTAP_2022.05.28 Added an API link to AAVSO webpage
ASTAP_2022.05.23 For Linux and Mac version corrected to batch menu "set modified file date to DATE-OBS" for local time.
ASTAP_2022.05.09 Fixed an error in menu "Unknown star annotation" if star database was set in auto,
ASTAP_2022.05.07 Added avi video output. Added optional BAA report lines for photometry.
ASTAP_2022.05.04 Improved unknown star detection.
ASTAP_2022.04.11a Fixed a rare floating error in star database routine. Fixed roundness measurement which was accidentally broken some time ago.
ASTAP_2022.04.10 Improved speed of blind solving with about 30%. Added online HyperLeda and NED database search.
ASTAP_2022.04.05 Fixed an incidental image move if mouse leaves the image after startup and zooming.
ASTAP_2022.04.04 Overhauled FITS reader, Overhauled SQM menu, Overhauled image equalise background tool.
ASTAP_2022.04.02 Added pressure keyword. Code optimization.
ASTAP_2022.04.01 Some cosmetic changes. Updated Libraw for Mac. Other operating systems will follow.
ASTAP_2022.03.31 Improved accuracy mount analyse.
ASTAP_2022.03.30 Overhauled tab mount analyse.
ASTAP_2022.03.24 Added an option in the light tab popup menu to add automatic add the alignment star based on the first image. Added an option to batch rotate image 180 degrees.
ASTAP_2022.03.22a Fixed error in converting to mono.
ASTAP_2022.03.22 For inspector tab, added normalisation for bayer images. Allowed xisf for stacking and inspection.
ASTAP_2022.03.16 Added Astro-TIFF to the viewer batch solving menu. Some code optimisation.
ASTAP_2022.03.16 Fixed an Astro-TIFF reading the scale introduced yesterday.
ASTAP_2022.03.15 Fixed an Astro-TIFF problem for astrometric stacken. Fixed an Astro-TIFF gain problem.
ASTAP_2022.03.14 Removed stdin option. For solver improved angular distance indicator. Added Astro-TIFF reading to command-line version ASTAP-CLI.
ASTAP_2022.03.13 Some small changes in the solver. Code optimisation in inspector/tilt measurement.
ASTAP_2022.03.11 Added an option to normalise OSC images prior to solving
ASTAP_2022.03.10 Updated the tab inspector for the 9 areas.
ASTAP_2022.03.10 Modified inspector. Change tilt inspector measurement from 5 to 9 areas (irregulur octagon).
ASTAP_2022.03.08 Added an option to the batch menu to recover the file date.
ASTAP_2022.03.06 Added the SQM value to batch menu. Added an option to maintain the last modified date for batch solving.
ASTAP_2022.03.01a Added the option for multi pasting for "Copy past tool". Hold alt or ctrl key to keep pasting.
ASTAP_2022.03.01 Added some keywords for Astro-TIFF handeling. Added an experimental halo removal tool to viewer. Removed some viewer menus. Fixed viewer "Unknown star detection".
ASTAP_2022.02.24 Fixed a major bug in LRGB stacking which was introduced in 2022-12-8. RGB stacking was not affected.
ASTAP_2022.02.22 Fixed some more Astro-TIFF keyword.  Added menu to convert to TIFF while preserving file date.
ASTAP_2022.02.21 Added ASTRO-TIFF desciption to TIFF 32 bit output.
ASTAP_2022.02.19 Fixed some minor problems for Astro-TIFF files.
ASTAP_2022.02.18 Added an auto mode for max number of stars. Solving will then start with 60 stars, 120, 240, 480 stars till image is solved.
ASTAP_2022.02.17 Removed a test message in log.
ASTAP_2022.02.13 Fixed some problems in importing Astro-TIFF files.
ASTAP_2022.02.12 Added in case of a solution is found the keyword equinox to the header. Improved implementation of astro-tiff.
ASTAP_2022.02.06 Added the option to the status bar popup menu to display noise in electrons,
ASTAP_2022.02.04a Allowing Japanese characters in path.
ASTAP_2022.02.04  Fixed a too long search pattern for solving for values above 90 degrees.
                                 Darks can now be selected based on gain.
                                 Added SuperPixel demosaic method.
                                 Removed too many * in configuration file.
ASTAP_2022.1.23  Fixed colour replacement menu.
ASTAP_2022.1.16  Added an option to the tab "monitor" to measure distance to target.
2022-1-14,  Mac, update the deepsky and variable stars database in the pkg installers.
 Fixed a problem with black spot filter. Added astap_cli.exe to the installer.
ASTAP_2022.1.13  Fixed major problem with photometry tab recently introduced.
ASTAP_2022.1.12  Improved the search spiral for solving.
2022-01-07  Improved the log output of ASTAP_CLI
2022-01-06  Recompiled a broken version of astap_cli for armhf.
ASTAP_2022.1.6  Added a crop function to the blink video output.
ASTAP_2022.1.2  Fixed a colour problem when stacking OSC images.
ASTAP_2022.1.1  The "semantic versioning" is replaced by "calendar versioning" since ASTAP is continuous evolving.

2021-12-31  ASTAP_1.0.0RC11  Added camera gain to weight-factor stacking. Reintroduced two flip menus again for image rotation.
2021-12-27  ASTAP_1.0.0RC10  Changed the engine for rotating images. Changed license to MPL 2.0.
2021-12-24  ASTAP_1.0.0RC9a  Added a solver option to the monitor tab.
2021-12-23  ASTAP_1.0.0RC9   Gained some speed for rating an image. Some bug fix for code optimisation.
2021-12-22  ASTAP_1.0.0RC9_early   Early edition of RC9. No new functionality but very large code modification/optimisation.
2021-12-21  ASTAP_1.0.0RC8  Improved SQM measurement menu and monitoring tab.
2021-12-19  ASTAP_1.0.0RC7  Added a tab for monitoring a directory. Fixed a bad compile for the Mac M1.
2021-12-12  ASTAP_1.0.0RC6  Improved LRGB stacking. (Colour for saturation)
2021-12-11  ASTAP_1.0.0RC5a Fixed a font size problem for the CCD inspector tilt indication.. 
2021-12-09  ASTAP_1.0.0RC5  Fixed a Mac M1 file browse problem. Improved responsiveness for live stacking. 
2021-12-02  ASTAP_1.0.0RC4  Improved layout inspector menu. 
2021-12-01  ASTAP_1.0.0RC4  Pre edition. Overhauled the inspector menu. Added three corner option.
2021-11-26  ASTAP_1.0.0RC3  Recompiled the Mac version using a compiler with bug fix for busy cursor.
2021-11-25  ASTAP_1.0.0RC3  Overhauled the unroundness measurement. Added vectors for the unroundness measurement. Modified the inspector menu. For method average the word _average is added to the stack file name. Fixed a menu problem with recent file 1.
2021-11-21  ASTAP_1.0.0RC2  Fixed a mix up between selecting DCRAW and "LibRaw (cropped active area)"
2021-11-21  ASTAP_1.0.0RC1  Updated the unprocessed_raw conversion program for mode "LibRaw (cropped active area)"
2021-11-20  ASTAP_1.0.0RC1 RC1, Release candidate 1, Added keyword ISOSPEED.
2021-11-19  ASTAP_0.9.594 Add a LibRaw option to convert to standard image dimensions (Libraw thumb). The default LibRaw  option creates a little large dimensions.
2021-11-16  ASTAP_0.9.593 Made SQM measurement compatible with DSLR images by automatic binning. Allowed for tab pixelmath 1, ring equalise a centrum outside the middle
2021-11-13  ASTAP_0.9.592 Improved accuracy of photometry routine.
2021-11-12  ASTAP_0.9.591 Fixed a problem with an AAVSO chart request (+ sign declination)
2021-11-11  ASTAP_0.9.590 Added option to call up AAVSO chart and import AUID stars from clipboard.
2021-11-08  ASTAP_0.9.589 Fixed altitude calculation of SQM  measurement. Added unprocessed_raw-astap to Raspberry Pi versions, so select libraw for any raw files.
2021-11-05  ASTAP_0.9.588b Added clear list to popupmenu results tab and added reference image indicator to blink tab.
2021-11-01  ASTAP_0.9.588 Added unroundness measurement to CCD inspector.
2021-10-30  ASTAP_CLI 0.9.587 Adapted the command-line version to the W08 wide field star database. W08 will be used if the FOV is larger then 20 degrees (height). Updated the astap_cli star detection to astap version (circular annulus)
2021-10-24  ASTAP 0.9.587 Replaced w07 by w08 database. Improved solving for wide field. Added option auto select database.
2021-10-20  ASTAP 0.9.586 Development version: Added constellations and solving for field-of-view larger then 20 degrees using the new w08 database. Fixed a problem for the AAVSO report for 4k monitors.
2021-10-15  ASTAP 0.9.585  Added a stack option to skip RGB combining.
2021-10-09  ASTAP 0.9.584a  Fixed extension problem in macOS using menu option export.
2021-10-08  ASTAP 0.9.584  Some minor corrections. Removed de-mosaic method Malvar_Hu_Cutler.
2021-10-06  ASTAP 0.9.583  Development version. Fixed a flat & flat-dark classification problem.
2021-10-06  ASTAP 0.9.582  Development version. Added an flat & flat-dark classification option for exposure time. Blink menu. prevent run time errors for button "export alignment".
2021-10-02  ASTAP 0.9.581c  Fixed a lost Windows. Unfortunately I compiled the program with the main window at my left screen. This is now fixed.
2021-10-01  ASTAP 0.9.581b  Fixed a status bar problem. Fixed a minor problem indicating the RA mount error for large errors.
2021-09-25  ASTAP 0.9.581  Fixed -update command line option for ASTAP and ASTAP_CLI. Added marker input for degrees. Fixed a minor annotation accuracy problem.
2021-09-24  ASTAP 0.9.580  Development version. Added CCD inspector to live stacking. Fixed dark and flat apply for live stacking.
2021-09-23  ASTAP 0.9.579c  Development version. Tweaked colour smooth routine.
2021-09-14  ASTAP 0.9.579b  Development version. Fixed a problem stacking 8 bit images.
2021-09-13  ASTAP 0.9.579  Development version. Fixed an error in tab mount analyses.
2021-09-12  ASTAP 0.9.578  Development version. Added to tab mount analyses an option to measure the polar axis error using two images.
2021-09-09  ASTAP 0.9.577  Development version. Modified the tab for mount analyse.
2021-09-09  ASTAP 0.9.576  Development version. Added RAW red, blue pixel extraction to photometry tab. Replaced some ephemerides calculation  code.
2021-09-05  ASTAP 0.9.575  Some very minor changes.
2021-09-03  ASTAP 0.9.574a Development version. Replaced the ephemerides routine for annotations. This is a large mod. Added more tilt info in  the CCD inspector bottom line message..
2021-08-27  ASTAP 0.9.573 Fixed persistent text location for flipped view.
2021-08-27  ASTAP 0.9.572 Viewer, added an option to annotate in the image data (persistent). See popup menu "Add annotation", add  @ to the text.
2021-08-25  ASTAP 0.9.571a Small cosmetic menu changes.
2021-08-23  ASTAP 0.9.571 Adapted automatic binning to cropping and so increasing the solver reliability for FOV larger then 5 degrees. Some code optimisations.
2021-08-19  ASTAP 0.9.570 Fixed a cropping problem for very large FOV. Adapted star annotation for very large FOV.
2021-08-18  ASTAP 0.9.569a Fixed a range problem in undisturbed image scale calculation.
2021-08-17  ASTAP 0.9.569 Improved routine for adding "SIP polynome" factors. Added a routine to measure undisturbed image scale based on the center stars. This will greatly improve inspector "show distortion".
2021-08-12  ASTAP 0.9.568 Improved indication "show distortion" including reporting the median astrometric error.
2021-08-10  ASTAP 0.9.567 Changed background part of the solver. Modified artificial image routine.
2021-08-07  ASTAP 0.9.566a Added an option to place the RA, DEC marker in the center by typing C.
2021-08-07  ASTAP 0.9.566 Overhauled batch routine menus. Changed some icons.
2021-08-06  ASTAP 0.9.565b Fixed a runtime error in AAVSO report for the case only one image is used.
2021-08-03  ASTAP 0.9.565a Prevented a runtime error for large annulus used for star measurement.
2021-07-31  ASTAP 0.9.565 Some improvements in the limiting magnitude reporting.
2021-07-30  ASTAP 0.9.564 Improved limiting magnitude calculation.
2021-07-29  ASTAP 0.9.563 Added a magnitude estimate message in the photometry calibration. Code optimisation.
2021-07-27  ASTAP 0.9.562 Linux, fixed a  shared libraries: libQt5Pas.so.1 error message.
2021-07-25  ASTAP 0.9.562 Improved conversion to FITS routine, added PPM files, xisf.
2021-07-21  ASTAP 0.9.561 Added a Simbad query for the popup menu.
2021-07-18  ASTAP 0.9.560a Some minor corrections. Fixed message sub-sampling required for very large images.
2021-07-14  ASTAP 0.9.560 Added "Aberration Inspector", Fixed font size free text at bottom.
2021-07-09  ASTAP_CLI, fixed the -fov option of the astap_cli version. Fixed a run time error using stdin.
2021-07-08  ASTAP 0.9.559 Improved reporting via keyword CALSTAT. Modified some messages.
2021-07-03 Improved some things in the command line version.
2021-07-03  ASTAP 0.9.558a Development version.  Fixed a problem where jpeg, png and tiff where read in mono colours only. Updated the compiler for Mac to fix a sorting problem of the listview checkboxes.
2021-06-30  ASTAP 0.9.558 Development version.  Added a light curve to the photometry report:

2021-06-26  ASTAP 0.9.557 Improved SOLVER. Removed some flashing in the log.
2021-06-25  ASTAP 0.9.556 Modified the alignment of the controls in the stack menu. Issued for the Mac.
2021-06-23  ASTAP 0.9.555 Modified "magnitude measured annotation" menu option. Added a calculated 10 sigma limited magnitude indication.
2021-06-22  ASTAP 0.9.553b Fixed arm64 version for the RaspberryPi. The compiler created a version which always used a FOV of 5.1 degrees. Fixed.
2021-06-20  ASTAP 0.9.554 For command line and using LibRaw, now creating consistent file extensions for .log and.wcs log files. So .CR3 is resulting in .ini and .wcs files and not in .CR3.ini and .CR3.wcs log files.
2021-06-17  ASTAP 0.9.553a Cosmetic changes.
2021-06-15  ASTAP 0.9.553 Development version, new menu for finding an object position. New menu for SQM measurement.
2021-06-15  ASTAP 0.9.552a Fixed Libraw conversion for the Mac
2021-06-13  ASTAP 0.9.552a Development version. Improved some things in the CCD inspector, menu "Median back ground values".
2021-06-12  ASTAP 0.9.552 Fixed restoring saved check marks file list. Fixed option calibration and alignment. Fixed writing values above 65535 in 16 bit format. Some improvements stacking routine.
2021-06-10  ASTAP 0.9.551 Development version. Improved SQM routine for DSLR images. 
2021-06-08  ASTAP 0.9.550 Modified blink routine. Keeps now solution in memory rather then in separate files.
2021-06-07  ASTAP 0.9.549 Fixed calibration prior to solving
2021-06-06  ASTAP 0.9.548 Development version. Added internal routine to inspector to convert colour to mono for better accuracy of coloured images. Introduced new menu to inspector for measuring relative median background values.
2021-06-03  ASTAP 0.9.547b Development version. Fixed a minor problem if change keyword is applied on .CR2 files.
2021-05-28  ASTAP 0.9.547 Replaced in CCD inspector menu the box filter by normalise option. Reorganised tab stack menu.
2021-05-27  ASTAP 0.9.546 Improved loading time again. Added normalise filter for OSC flats.
2021-05-26  ASTAP 0.9.545 Cosmetic corrections stack menus. Improved loading time when stack menu contains many files.
2021-05-25  ASTAP 0.9.544 Fixed several annotation problems. Fixed dave-avg calculation which was broken.
2021-05-24  ASTAP 0.9.543 Added a menu option to add some data to the bottom of the screen. See viewer menu screen. Modified the code of asteroid annotation.
2021-05-22  ASTAP 0.9.542 Allowing LSHO stacking. E.g. H-alpha for both green and luminance.
2021-05-20  ASTAP 0.9.541 Added some extra messages for photometry. Fixed a minor problem at RA=0.
2021-05-19  ASTAP 0.9.540 Added in tab result an option to add the time to the filenames.
2021-05-17  ASTAP 0.9.538/9 Fixed a run time error occuring after clicking on colour images or debayering with 130% scale layout. 
2021-05-16  ASTAP 0.9.537d Moved font away from star for inspector menu HFD values since it influenced the measurment.
2021-05-16  ASTAP 0.9.537c  Improved the date input interface for asteroid annotation.
2021-05-15  ASTAP 0.9.537b  Fixed reporting of luminance filter for stacking.
2021-05-14  ASTAP 0.9.537  Fixed for blink and photometry tab a wrong column for data/time.
2021-05-14  ASTAP 0.9.536  Added the min HFD filter to analyse the image list. Fixed saving the smooth filter diameter.
2021-05-14  ASTAP 0.9.535  Added a "remove green & purple" filter for Hubble palette.
2021-05-11  ASTAP 0.9.534  Added a second CCD inspector menu using stars with SNR>10. Simplied menu "creating star test images"
2021-05-10  ASTAP 0.9.533a  Added bith depth measurement to the statistics.
2021-05-07  ASTAP 0.9.533  Improved saturation detection for images with max values below 65000.  Typical DSLR images with max pixel values of 4096 or 16384.
2021-05-06  ASTAP 0.9.532  Further improved grid. Reintroduced log scale for histogram.
2021-05-02  ASTAP 0.9.531  Added RA,DEC grid option under menu View.
2021-04-29  ASTAP 0.9.530  Added possibility to calculate and add SIP coefficient to the header. Added filter names to stacked file name. Added pixel scale to show distortion. Increased sensitivity show distortion menu.
2021-04-26  ASTAP 0.9.529a  Fixed a hanging bug in histogram routine for high resolution monitors
2021-04-24  ASTAP 0.9.529  Removed piece of test code to fix the mount analyse tab.
2021-04-20  ASTAP 0.9.528a  Modified max range setting histogram.
2021-04-18  ASTAP 0.9.528  Overhauled histogram. Removed beep in inspector. Allowed colour change for all annotations via menu asteroid annotation.
2021-04-14  ASTAP 0.9.527  For the stack routine replaced the small ".astap_solution" files by memory based solution.
2021-04-13  ASTAP 0.9.526  Development version. Master flat and master dark can be created based on date. For light the nearest dark and flat date will be selected.
2021-04-09  ASTAP 0.9.525  Removed creation of *.bak files in several file save actions.
2021-04-07  ASTAP 0.9.524b  Some format changes mount analyse tab.
2021-04-06  ASTAP 0.9.524  Modified the mount analyse tab.
2021-04-06  ASTAP 0.9.523b  Fixed a problem with Nina FITS headers containing keyword value  OBJCTRA = '00 00 00'
2021-04-05  ASTAP 0.9.523  Modified LRGB and OSC stacking.  Fixed a problem for the Mac for renaming to *.bak or removing a selection
2021-04-02  ASTAP 0.9.522  Improved background detection for solver. Added colour icons to flat tab.
2021-03-30  ASTAP 0.9.521  For tab mount added option to write solution to .wcs file
2021-03-29  ASTAP 0.9.520bcd  Added true equinox of date for tab mount
2021-03-25  ASTAP 0.9.520  Added tab for mount analysing
2021-03-25  ASTAP 0.9.519  Added airmass to photometry and default observer position for DSLR images.
2021-03-22  ASTAP 0.9.518  Cosmetic changes in the photometry routine.
2021-03-21  ASTAP 0.9.517  For photometry changed the annulus shape to round. Overhauled background detection in the star detection routine. Solving should work a little better.
2021-03-21  ASTAP 0.9.516  Fixed a fatal bug in unprocessed_raw conversion program for raw files.
2021-03-17  ASTAP 0.9.515  Some small correction for photometry.
2021-03-16  ASTAP 0.9.514  Update for new LibRaw program. This modified LibRaw version can export directly to fits file and will be included with the program.
2021-03-14  ASTAP 0.9.513  Linux, first test version with modified LibRaw program unprocessed_raw-astap. Separate download for unprocessed_raw-astap.
2021-03-09  ASTAP 0.9.512a  Fixed a very rare run time error in the solver.
2021-03-08  ASTAP 0.9.512  Photometry adjustments. Backwards blink for blink tab.
2021-03-06  ASTAP 0.9.511  Photometry adjustments. Backwards blink for lights tab.
2021-03-05  ASTAP 0.9.510  Revamp and split of photometry calibration for point and extended objects.
2021-03-03  ASTAP 0.9.509  Added adjustable annulus for photometry.
2021-03-03  ASTAP 0.9.508b  fixed photometry for H17, H18.
2021-03-02  ASTAP 0.9.508  fixed photometry annotation problem.
2021-03-02  ASTAP 0.9.507b  fixed a photometry alignment error.
2021-03-02  ASTAP 0.9.507  Improvements photometry tab.
2021-02-27  ASTAP 0.9.506  Added fixed aperture to photometry tab.
2021-02-26  ASTAP 0.9.505  Improvements photometry tab. 
2021-02-25  ASTAP 0.9.503/4 Development version. Improved photometry tab, modified the command-line such that solving, analyse and sqm mesurements are possible in one command.
2021-02-23  ASTAP 0.9.502 Development version. Improved photometry menu.
2021-02-22  ASTAP 0.9.501 Development version, Fixed pedestal of "calibration only".  Improved some things in the photmetry tab.
2021-02-22  ASTAP 0.9.500 Fixed a command line  bug for H17 and H18 databases. For some areas solving didn't work correctly.
2021-02-18  ASTAP 0.9.499 Development version. Raw colour extraction extended with named colours.
2021-02-16  ASTAP 0.9.498 Fixed the distortion display. Fixed a problem with not enough stars in star database annotation.
2021-02-15  ASTAP 0.9.497a Fixed some ugly annotation fonts in the Windows version.
2021-02-14  ASTAP 0.9.497 Fixed a run time error in ephemerids calculation.
2021-02-13  ASTAP 0.9.496 Added atmopheric extinction correction for SQM measurement.
2021-02-12  ASTAP 0.9.495 Add a report to file at AAVSO menu.
2021-02-12  ASTAP 0.9.494 Fixed a problem that variable annotation worked for all tabs and not only photometry tab.
2021-02-11  ASTAP 0.9.493b Different font settings for deepsky objects.
2021-02-10  ASTAP 0.9.493 Bug fix photometry tab and AAVSO report.
2021-02-10  ASTAP 0.9.492 Development version: Bug fix photometry and AAVSO report.
2021-02-09  ASTAP 0.9.490/1 Development version: Added AAVSO reporting to the photometry tab. Overhauled photometry routine.
2021-02-07  ASTAP 0.9.489 Development version: Adapted asteroid annotation font size to image dimensions.
2021-02-06  ASTAP 0.9.488 Development version:  Increased accuracy of photometry.
2021-02-03  ASTAP 0.9.487 Modified photometry tab to three stars. Added AAVSO reference stars to the variable star database.
2021-01-30  ASTAP 0.9.486 Modified centering for photometry tab.
2021-01-29  ASTAP 0.9.485 Reduced the noise in the magnitude measurement with about 20%.
2021-01-28  ASTAP 0.9.484 Fixed broken ra, dec marker. Corrected some messages in photomety tab. Improved code photometry calibration.
2021-01-27  ASTAP 0.9.483 Tuned a factor in the solver. Some code clean-up.
2021-01-22  ASTAP 0.9.482 DEvelopment version, added a pedestal input for the batch routine "add sqm value".
2021-01-21  ASTAP 0.9.481 Development version. Added SQM measurement to command line, batch routine and lights tab.
2021-01-21  ASTAP 0.9.480 Simplified SQM measurement. Modified Image inspector menu for Bayer images.
2021-01-19  ASTAP 0.9.479 Added an Image inspector for Bayer images. Image will be first 2x2 Box filtered.
2021-01-19  ASTAP 0.9.478 Added the option to enter a pedestal correction to the SQM menu.
2021-01-18  ASTAP 0.9.477 Moved SQM measurement to seperate menu. Added SQM based on noise.
2021-01-17  ASTAP 0.9.476a Fixed a decimal in SQM measurement.
2021-01-17  ASTAP 0.9.476 Development version. Changed noise detection solver. Added SQM measurement to viewer menu "Magnitude (measured) annotation".
2021-01-13  ASTAP 0.9.475 Some menu changes "image (CCD) inspector".
2021-01-13  ASTAP 0.9.474 Added 2D contour to the image inspector.
2021-01-10  ASTAP 0.9.473 Adapted the license to LGPL3+
2021-01-09  ASTAP 0.9.473 Adapted flow control of stdin channel.
2021-01-09  ASTAP 0.9.472 Raw images  can be send to ASTAP using stdin. See command line option "-f stdin"
2021-01-07  ASTAP 0.9.471 Improved some messages and text.
2021-01-05  ASTAP 0.9.470 Added H17 database. This one replaces the G17. Minor modification in database selection.
2021-01-04  ASTAP 0.9.469 Fixed Debian package. Removed an old ASTAP version at /usr/local/bin and replaced it by a logical link. 
2021-01-03  ASTAP 0.9.469  Introduced the H18 database. This database contains 1475 areas rather then the previous 290 areas. Solving speed will be fast for file with a FOV less then one degrees.
2020-12-26  ASTAP 0.9.468  Fixed file selection of some batch menu options for Linux. Fixed bath right orientation.
2020-12-20  ASTAP 0.9.467  Adapted the units of the reported mount error.
2020-12-18  ASTAP 0.9.466 Added for command line option  find best focus using several input files also the remaining error.
2020-12-17  ASTAP 0.9.465 Development version: added command line option to find best focus using several input files.
2020-12-17  ASTAP 0.9.464 Development version: several small improvements and fixes. Reports mount offset.
2020-12-16  ASTAP 0.9.463 Development version: New tool, show the mount position in solved image. Some improvements
2020-12-16  ASTAP 0.9.462 Development version: Online Gaia star information by rectangle selection. Astrometric solution of cropped FITs  moved to image center. Displays better in planetarium program.
2020-12-14  ASTAP 0.9.461 Development version: Experimental online Gaia star information for a star at the mouse pointer.
2020-12-14  ASTAP 0.9.460 Fixed reading date_obs and observer location from XISF file for asteroid annotation.
2020-12-12  Uploaded the first new Gaia star databases based on Gaia release eDR3. Difference will be minimal.
2020-12-11 ASTAP 0.9.459b Increased the minimum detection level for the inspector tab to SNR>30. Results are now equal to CCD inspector in viewer.
2020-11-29 ASTAP 0.9.459   Fixed a minor display problem for 4k screens.
2020-11-27 ASTAP 0.9.458   Excluded saturated stars from CCD inspector.
2020-11-26 ASTAP 0.9.457   Fixed rare problem in background calculation for OSC images if an even stepsize is selected.
2020-11-25 ASTAP 0.9.456a   Some cosmetic menu corrections for QT5 version.
2020-11-25 ASTAP 0.9.455   Added code for selection of dcraw-astap, a version which creates pgm files with meta data in the comment section.
2020-11-24 ASTAP 0.9.454   Improved code for listview preventing runtime errors.
2020-11-23 ASTAP 0.9.453   Adapted altitude and azimuth reading to both string and float format reading.
2020-11-22 For Linux, set permission correct for deep_sky.csv
2020-11-21 ASTAP 0.9.452   Stack menu. Modified column stars_detected in image quality column. Quality is equal to nr stars detected divided by HFD. Upgraded automatic unselection of poor image accordingly.
2020-11-20 ASTAP 0.9.451   Changed selection of reference image for stacking from lowest hfd to quality equal stars_detected/hfd.
2020-11-18 ASTAP 0.9.450   Improved the photometric tab functionality. Corrected long warning strings in FITS header. Fixed an exposure time detection in stacking.
2020-11-09 ASTAP 0.9.449   Overhauled the star database reader. The solver is 35 to 40% faster for small fields (<=0.5 degrees)
FOV=4.6 degrees, offset 50 degrees. Solved in 2.6 seconds
FOV=0.48 degrees, offset 22 degrees. Solved in 34 seconds
FOV=0.23 degrees, offset 6 degrees. Solved in 20.5 seconds

2020-11-05 ASTAP 0.9.448   Cosmetic code changes.
2020-11-03 ASTAP 0.9.447   Cosmetic changes.
2020-11-02 ASTAP 0.9.446   More improvements for displaying MEF, multi-extension FITS. Removed exporting FITS with tables.
2020-11-01 ASTAP 0.9.445   Fixed some table problems in displaying MEF, multi-extension FITS.
2020-10-31 ASTAP 0.9.444   Fixed some menu things related to multi-extension FITS.
2020-10-31 ASTAP 0.9.443   Modfied the viewer for multi-extension FITS. Can display images or 2D tables in the extension(s).
2020-10-29 ASTAP 0.9.442   Added -extract option to export detected star to a csv file.
2020-10-28 ASTAP 0.9.441   Raised detection level for CCD inspector and commandline option -analyse to SNR>=30
2020-10-26 ASTAP 0.9.440   Development version. Improved command line -analyse option
2020-10-25 ASTAP 0.9.439   Development version. Improved pixel math option to creating artifical star image. Stars are no longer centered at pixel center but random placed.
2020-10-24 ASTAP 0.9.438   Optimized database file reader buffer for speed. In some cases the solver is 10% faster.
2020-10-22 ASTAP 0.9.437   Viewer, option stretch draw to FITS. Preserve now the astrometric solution correctly. Added the latest Libraw version. DCRAW is still preferred.
2020-10-21 ASTAP 0.9.436   Fixed an undefined variable which could result in a white viewer screen if a floating point FITS file  was loaded.
2020-10-19 ASTAP 0.9.435   Made an other correction for the solver for FOV=auto with respect of excluding too small quads.
2020-10-19 ASTAP 0.9.434   If the user enters manually a FOV in alignment or in the commandline, the correction is now included in excluding too small quads.
2020-10-16 ASTAP 0.9.433   Fixed some minor things. 
2020-10-14 ASTAP 0.9.432   Added nova & minor planet detection using the star database. Fixed some ugly fonts.
2020-10-14 ASTAP 0.9.431   Fixed a major runtime error in stack routine introduced a few version back.
2020-10-14 ASTAP 0.9.430
2020-10-13 ASTAP 0.9.429   Fixed swipe behavior for Linux version only. Happened if the left mouse button is pressed while mouse is moving.
2020-10-08 ASTAP 0.9.428   Development version. Modified mouse wheel zoom behavior in the viewer. Viewer will zoom centered at the mouse position.
2020-10-08 ASTAP 0.9.427a   Added the standard log to stdout if executed in Linux command-line mode. 
2020-10-08 ASTAP 0.9.427  Preventing rotation of RAW files using DCRAW by command-line -t 0. Changed stitching (mosaic) mode. Improved the standard deviation measurement at mouse cursor. Release command line versions for Windows. Log goes to stdout.  

2020-10-06 ASTAP 0.9.426  Changed image stitching (mosaic) mode. Added font selection to fits header memo. Changed some colours.

2020-10-03 ASTAP 0.9.425  Improved speed of the list viewer for many files.
2020-10-03 ASTAP 0.9.424  Fixed a problem for the Mac with selecting an area. Fixed place of reported magnitude of an area. Added time stamp to blink routine.
2020-9-29 ASTAP 0.9.423  Some more improvements in the solver.
2020-9-28 ASTAP 0.9.422  Major overhaul solver. Fixed problem solving images of global cluster in combination with a small field of view. This was caused by a numerous global cluster center stars in the Gaia database.
2020-9-25 ASTAP 0.9.421  Overhauled image stitching (mosaic) routine. The tiles background should be more equals now.  Fixed some messages and some other minor things.
2020-9-18 ASTAP 0.9.420  Improved artificial flat tool.
2020-9-18 ASTAP 0.9.419  Modified colour stacking for seperate colours. Should work better now.
2020-9-15 ASTAP 0.9.418  Solver, improved detection of quad outliers. Changed default tolerance from 0.005 to 0.007.
2020-9-8 ASTAP 0.9.417  Added functionality to copy only a image selection to the  clipboard.
2020-9-8 ASTAP 0.9.416  Added angular distance measurement double stars to tools menu viewer. Improved calibration and alignment only execution flow. Large overhaul code viewer tools code. Please report any bug.
2020-9-2 ASTAP 0.9.415  Added global clusters of M31 and M33 to deepsky database. For MAC this will be added to the star database later or use this one http://www.hnsky.org/deep_sky.zip
2020-9-1 ASTAP 0.9.414b  Added the binning factor for calculator in pixelmath2
2020-8-30 ASTAP 0.9.414  Modified solver such it can solve with only two quads(tetrahedrons) found.
2020-8-28 ASTAP 0.9.413  Modified annotation text size. Fixed a problem resizing image in pixel math 2.
2020-8-22 ASTAP 0.9.412a  Textual change. Four star asterisms are now called quads rather then tetrahedrons.
2020-8-21 ASTAP 0.9.412  Fixed a colour stack problem if only two colours are available.
2020-8-20 ASTAP 0.9.411  Increased solver accuracy by an extra step in the solver using all stars. It will do a second solve using the position of the first solve if the search window is more then 5% of the image height from the center. So it will use in all cases 95% or more of the  available stars of the image.
2020-8-19 ASTAP 0.9.410  Finalised star extractor improvement giving some improvement for faint star images.
2020-8-18 ASTAP 0.9.409  Modified star detection. Should pickup fainter stars. Testing required.
2020-8-18 ASTAP 0.9.408  Improved viewer popup menu option image statistics.
2020-8-17 ASTAP 0.9.407  Code optimisation.
2020-8-16 ASTAP 0.9.406  Code optimisation: Removed 24 bit FITS code and replaced by conversion to standard 8 bit fits array.
2020-8-16 ASTAP 0.9.405  Extended the viewer tool statistics with most common value (background) and background noise (noise below most common).
2020-8-14 ASTAP 0.9.404  Allowed stacking of coloured FITS with darks. Fixing problem conversion to mono with demosaic preview activated.
2020-8-14 ASTAP 0.9.403  Increased pixel accuracy for copy/paste tool.
2020-8-12 ASTAP 0.9.402  For image list, changed deviation measurement to centre image only. This gives better result for flats and darks with amp glow.
2020-8-11 ASTAP 0.9.401  Expanded binning menus. Allowed statistic of whole image in viewer.
2020-8-11 ASTAP 0.9.400  Added stretch draw to FITS (viewer), added image multiply to pixel math
2020-8-10 ASTAP 0.9.399a  Increased median measurement to full image.
2020-8-9 ASTAP 0.9.399  Added statistics option to pop-up menu.
2020-8-5 ASTAP 0.9.398  Added missing dark and light "standard deviation" in the list after making a master.
2020-8-1 ASTAP 0.9.397  The Mac version is compiled with the latest trunk compiler allowing some fixes. Select all image list works and double click on Ra or DEC position.. Outstanding a smooth scroll function for min and max histogram sliders. Updated the code for black and white image detection. 
2020-7-30 ASTAP 0.9.396  Added pointer line to the histogram. Some code optimisations. Added blink video result to the result tab.
2020-7-29 ASTAP 0.9.395  Added a video output routine (yuv4mpeg2) to the blink tab. Fixed blinking of images requiring a Bayer demosaic.
2020-7-25 ASTAP 0.9.394a  Fixed a problem reading FITS files from PI with a thumnail extension.
2020-7-25 ASTAP 0.9.394  Fixed a problem in the gradient tool. Extended the equalise tool in pixel math 1. Modified "remove background colour" tool in pixel math 1.
2020-7-23 ASTAP 0.9.393  Introduced gradient removal tool in pop-up menu viewer.
2020-7-22 ASTAP 0.9.392  Improved comet locking for manual stacking.
2020-7-21 ASTAP 0.9.391  Fixed reading XISF files from Nina,  added keyword ROWORDER. Modified demosaic bayer pattern setting.
2020-7-20 ASTAP 0.9.390  Added: Allows solving read only FITS files for the Voyager program. This solves some file access problems with Voyager program.
2020-7-18 ASTAP 0.9.389  Added the -debug option in the command line menu. Improved the calculator in pixelmath2. Some minor code optimisations.
2020-7-16 ASTAP 0.9.388  Reinstated in viewer menu the auto correct colour menu.
2020-7-8  ASTAP 0.9.387  Fixed a run time failure in the blink routine.
2020-7-7  ASTAP 0.9.386  Overhauled blink routine again. Abandoned automatic asteroid detection. Fully integrated MPCORB annotation.
2020-7-6  ASTAP 0.9.385  Fixed one pixel error in centroid RA, DEC indication.
2020-7-6  ASTAP 0.9.384  Some small improvement for blink routine. Added sorting (on date) for blink and photometry tab.
2020-7-5  ASTAP 0.9.383  Overhauled blink routine. Added experimental asteroid detection.
2020-7-1  ASTAP 0.9.382  Made blind solving about 25% faster by modifying the tetrahedron routine.
2020-6-27  ASTAP 0.9.381 Added keywords OBSLONG, OBSLAT, OBS-LONG, OBS-LAT to fits reader.
2020-6-25  ASTAP 0.9.380 Small correction in asteroid midpoint time calculation.
2020-6-25  ASTAP 0.9.379 Fixed a longitude calculation for asteroid annotation.
2020-6-22  ASTAP 0.9.378 Added saving of colour saturation setting.

2020-6-20  ASTAP 0.9.377 Fixed a runtime error in case the image has value above 65535.
2020-6-19  ASTAP 0.9.377  Modified the de-bayer preview function. Now auto level and colour smooth are applied as set tab stack menthod.
2020-6-17  ASTAP 0.9.376  To cope with raws converted by Libraw having black outer areas, the histogram routine ignores outer areas (few percent) of the images. Some other minor corrections. Added G18 star database installer installers.
2020-6-13  ASTAP 0.9.375 Added special dcraw version for Linux to read metadata of camera and write it to comment section of ppm file.
2020-6-12  ASTAP 0.9.374  raw conversion with DCRAW (for windows) modified. Now exposure, iso, date, model are read from raw file.
2020-6-11  ASTAP 0.9.373  Redesigned histogram interface.
2020-6-9  ASTAP 0.9.372  Reinstated DCRaw for conversion raw files. You can now select between DCRAW and Libraw.  Split the option level adjust and colour smooth for OSC images. Sigma factor for colour smooth made adjustable.
2020-6-3  ASTAP 0.9.371  Added some monitoring options to live stacking.
2020-5-31  ASTAP 0.9.370  Fixed problem solving near the celestial pole.
2020-5-29  ASTAP 0.9.369  Added to viewer popup menu copy image to clipboard.
2020-5-28  ASTAP 0.9.368  Development version. Improvement in solving. Fixed a problem solving images of the celestial pole.
2020-5-26  ASTAP 0.9.367  Development version. Rewrote star detection routine. Should be more tolerant to unround star images.
2020-5-23  ASTAP 0.9.366  Development version. Added warning"Star database limit reached". If this happens often, install the G18.
2020-5-22  ASTAP 0.9.365  Made solver/stack routine less sensitive to hot pixels.
2020-5-20  ASTAP 0.9.364  Development version which can save FITS tables. Some other small improvements.
2020-5-17  ASTAP 0.9.363  Development version which can read FITS extensions containing tables.
2020-5-8  ASTAP 0.9.362  Some optimisation in stacking method average. Adding the possibility to read and display FITS tables. Added option -wcs to export wcs files without carriage return.
2020-5-7  ASTAP 0.9.361  Introduced debayer method "Simple". Removed methods super pixel and Bayer drizzle.
2020-5-6  ASTAP 0.9.360  Fixed a problem with Libraw showing unused sensor areas.
2020-5-6  ASTAP 0.9.359  Fixed broken DSLR support since 0.9.356
2020-5-6  ASTAP 0.9.358  Fixed FOV calculation using XPIXSZ keyword introduced a few versions ago.
2020-5-6  ASTAP 0.9.357  Fixed a runtime error, especially when trying to solve a jpeg file.
2020-5-5  ASTAP 0.9.356  Introduced option "calibration and alignment only". Removed drizzle option. Added adjustable size for annotations. Changed annotations for small sizes to two lines. Some small changes. Add support for PFM files.
2020-5-2  ASTAP 0.9.355  Fixed  major bug reading floating point FITS files introduced in version 0.9.354.
2020-5-2  ASTAP 0.9.354  More improvements in LRGB stacking, automated range selection for AstroC debayering. Improved binning selection.
2020-4-30  ASTAP 0.9.353  Improved LRGB stacking.
2020-4-27  ASTAP 0.9.350  Fixed calibration prior to solving for stacking.
2020-4-27  ASTAP 0.9.349  Fixed a major bug in colour stacking introduced in version 0.9.348.
2020-4-26  ASTAP 0.9.348  Reintroduced local astrometry.net in batch menu solver. Improved warning messages. Add some extra checks while stacking.
ASTAP 0.9.347 not released.
2020-4-21  ASTAP 0.9.346  Fixed rows copy from popup menu.
2020-4-20  ASTAP 0.9.346  Fixed sigma clip method for manual and ephemeris stacking.
2020-4-18  ASTAP 0.9.345  Fixed some minor problem in ephemeris stacking. Added the possibility to switch off the annotation.
2020-4-18  ASTAP 0.9.344  Added a check form MPCORB.DAT and CometEls.txt.
2020-4-17  ASTAP 0.9.343  Major change. Completed menu for emphemeris stacking. Removed astrometry.net option.
2020-4-16  ASTAP 0.9.342  Introduced comet annotation and alignment using ephemerides. Fixed a problem in asteroid annotation. Asteroids 180 degrees on the other side of the sky where plotted in the image.
2020-4-14  ASTAP 0.9.341  Introduced asteroid alignment using ephemerides.  Reduced the warning for minimum height below 960 pixels.  
2020-4-7  ASTAP 0.9.340  If in the command line -fov 0 (auto) is specified, the by solving found fov will be preserved for next command line.
2020-4-3  ASTAP 0.9.339  Fixed problem stacking raw files. Introduced copy paste tool for copying part of the image for cosmetic purpose like fixing background.
2020-4-2  ASTAP 0.9.338  Improved pop-up menu option "measure total magnitude within rectangle".
2020-4-1  ASTAP 0.9.337  Added extra preset settings for viewer. Modified menu of batch routine for extracting one pixel position from the Bayer mosaic files.
2020-3-28  ASTAP 0.9.336  Improved B&W or colour detection for TIF, JPG files.
2020-3-27  ASTAP 0.9.335  Improved star detection with respect to hotpixels. Very minor speed increase. Improved colour replacement function in tab pixel math 1.
2020-3-18  ASTAP 0.9.334  Cosmetic fix in tab results in case your using for a 4k resolution screen.
2020-3-17  ASTAP 0.9.333  Fixed equalise tool in tab pixel math
2020-3-15  ASTAP 0.9.332  Fixed recent files menu for raw files. Added one extra decimal to measured magnitude in the statusbar. Improved object name retrieval from file name.
2020-3-7  ASTAP 0.9.331  Added support for Fujifilm X-trans sensors. (6x6 Bayer pattern). Fixed a discrepancy between stacking debayer format and viewing debayer format.
2020-3-5  ASTAP 0.9.330  Fixed batch annotation.
2020-3-3  ASTAP 0.9.329  Fixed error reading raw. Asteroid annotation can be saved with the FITS. Batch asteroid annotation intended for blinking.
2020-2-26  ASTAP 0.9.328  Mayor code reorganisation. Fixed esc button problem resulting in disabled menu. Fixed photometry magnitude problem introduced some time ago.
2020-2-24  ASTAP 0.9.327  Improved selection star database in tab alignment.
2020-2-23  ASTAP 0.9.326  Split the program and star database for the MacOS. The database with Johnson-V is now called V17. in header. Select the database in tab Alignment.
2020-2-22  ASTAP 0.9.325  Improved text of magnitude indication for stars brighter then magn 10. Fix for negative CDELT2 values from PI solution in header.
2020-2-19  ASTAP 0.9.323/4  Maintenance edition. Fixed batch binning. Made mean of pixelmath 2, add noise zeor. Increased zoom factor for Windows.
2020-2-15  ASTAP 0.9.322  Significant internal reorganisation. While stacking now preserving astrometric solution of reference image.
2020-2-13  ASTAP 0.9.321  Added some info to asteroid annotation.
2020-2-13  ASTAP 0.9.320  Added minimum star size factor to filter out hotpixels. Improved latitude/longitude reading header.
2020-2-12  ASTAP 0.9.319  Added asteroid annotation to viewer!
2020-2-8  ASTAP 0.9.318a  For inspector tab removed a limit for hfd>15.
2020-2-7  ASTAP 0.9.318  Modified the inspector code. Improved star detection code.
2020-2-2  ASTAP 0.9.317  Improved plot speed while pulling a rectangle with the right mouse button down. Fixed major bug in stacking with astrometry.net
2020-1-28  ASTAP 0.9.316  Improved curve fitting inspector tab.
2020-1-22  ASTAP 0.9.315  Improved inspector tab.
2020-1-21  ASTAP 0.9.314  Improved inspector tab. See https://www.cloudynights.com/topic/690595-what-does-percent-curvature-meanhow-is-it-calculated/page-3#entry9928932
2020-1-20  ASTAP 0.9.313  Added inspector tab.
2020-1-19  ASTAP 0.9.312a  Added ignore error for write .wcs file as required by some APT users.
2020-1-18  ASTAP 0.9.312  Fixed popup notifier height indication in degrees. It was displaying the default value rather then from the FITS header data.
2020-1-18  ASTAP 0.9.311  Fixed a major problem in the alignment tab created in version 0.9.310.
2020-1-17  ASTAP 0.9.310  Changed reporting CCD inspector to delta HFD. Added comet centering option to manual stacking.
2020-1-4  ASTAP 0.9.309  Minor change in sharpness value reporting.
2020-1-3  ASTAP 0.9.308  Added sharpness value to image list. Fixed stacking of JPEG files.
2019-12-18  ASTAP 0.9.307  Fixed a 0.9.306 problem in writing FITS files after average stacking. Fixed 8 bit file stacking.
2019-12-16  ASTAP 0.9.306  Added automatic selection de-bayer pattern. Introduced ring equalise. Updated local equalise tool viewer.  Some minor changes.
2019-11-26  ASTAP 0.9.305  Modified ctrl-z buffer from one step to three steps. Reorganized pixel math tab
2019-11-24  ASTAP 0.9.304  Improved colour replace routine in pixel math1.
2019-11-23  ASTAP 0.9.303  Fixed again OSC/mono dectection. Some cosmetic improvmenents.
2019-11-22  ASTAP 0.9.302  Some modification in the colour replace routine
2019-11-22  ASTAP 0.9.301  Added the colour replace routine to pixelmath, This could help to remove green light pollution from your images.
2019-11-17  ASTAP 0.9.300  Fixed some minor things in the solver. Added colour correction to live stacking.
2019-11-15  ASTAP 0.9.299b  Added image dimensions to pixel scale calculator. Code maintenance
2019-11-14  ASTAP 0.9.299a  Small modification warning messages.
2019-11-13  ASTAP 0.9.299  Added warnings and errors to solution.
2019-11-11  ASTAP 0.9.298  Added CR3 support. For Linux you have to compile and install the very lastest libraw library. Libraw has replaced dcraw. Introduced errorlevel for commandline.  Fixed live stacking for SGP
2019-11-08  ASTAP 0.9.297  Fixed a run time error in Linux version in stack function "untick worst images". Fixed some Hi-DPI alignment problems for 4k monitors.
2019-11-06  ASTAP 0.9.296  Improved naming of stacked file.
2019-11-06  ASTAP 0.9.295a  Adapted the PlateSolve2 mode for APT 3.76.1
2019-11-04  ASTAP 0.9.295  Increased the execution speed of the arbitrary rotation. Some cosmetic changes.
2019-11-03  ASTAP 0.9.294  Added arbitrary rotation for FITS files.
2019-11-02  Updated the star database G17 colour version. The previous version was installed in the wrong directory c:\program files\hnsky
2019-10-31  ASTAP 0.9.293  Removed in live stacking the sub directory search, for stacking added sigma factor to option remove hot pixels.
2019-10-30  ASTAP 0.9.292  Stacking: added an option to replace unstable hotpixels with neighbour values.
2019-10-30  ASTAP 0.9.291  Overhauled angle reporting in PlateSolve2 mode to mimic PlateSolve2.
2019-10-28  ASTAP 0.9.290  Live stacking, prevent an error message if a file is in use.
2019-10-27  ASTAP 0.9.289  Linux version, fixed a command line runtime problem, fixed a compiler problem for arm64 version.
2019-10-26  ASTAP 0.9.288  Linux version, fixed a command line runtime problem
2019-10-24  ASTAP 0.9.287  Fixed a rare run time error problem using the deepsky database.
2019-10-24  ASTAP 0.9.286a  Fixed a problem with the MacOS version. Saving of the FITS solution.
2019-10-23  ASTAP 0.9.286   Added binning for stack alignment. This will help to stack reliable OSC images. Modified the TIFF export to 32 bit float. This readable by Photoshop and Gimp.
2019-10-22  Modified setting path in MacOS version v0.9.284a
2019-10-21  ASTAP 0.9.285   Fixed a tiff file problem with live stacking.
2019-10-20  ASTAP 0.9.284   Added RAW, JPEG, TIFF, PNG format to Live stacking.
2019-10-19  ASTAP 0.9.283   Fixed some problems in Live stacking.
2019-10-19  ASTAP 0.9.282   Fixed some problems in Live stacking.
2019-10-18  ASTAP 0.9.281   Fixed some problems in Live stacking.
2019-10-18  ASTAP 0.9.280   Some small corrections.
2019-10-18  ASTAP 0.9.279   Some small changes in "live stacking"
2019-10-17  ASTAP 0.9.278  Added "live stacking". Added memo scroll to end for Linux.

2019-10-16  ASTAP 0.9.277  Added camera gain to the listview. Added fits header keyword values of AMB-TEMP and TAMBIENT  to FocTemp in list to stack.
2019-10-12  ASTAP 0.9.276a  Removed a beep sound which was left after testing.
2019-10-10  ASTAP 0.9.276  Added the command line option -analyse
2019-10-01  ASTAP 0.9.275  Fixed a double menu shortcut. Improved automatic detection OSC raw images.
2019-09-30  ASTAP 0.9.274  Added auto mode for FOV.
2019-09-30  ASTAP 0.9.273a  Prevent run time failure when trying to de-mosaic a fully saturated image.
2019-09-29,  ASTAP 0.9.273  Overhauled Mosaic routine for smoother borders. Added 180 degrees swap of FITS data.
2019-09-27,  ASTAP 0.9.272  Commandline has now priority above fits header. Fixed image sticking option. Removed some additional platesolve2 menus.
2019-09-26,  ASTAP 0.9.271  Moved messages from window.caption to statusbar. Annotations will be saved in the FITS header under key "annotate="
2019-09-24,  ASTAP 0.9.270  Set default downsampling to zero (automatic). Limited the database field internally to 10 degrees. Added support for readout of third-order polynomial SIP ( Simple Imaging Polynomial) calibration.
2019-09-23,  ASTAP 0.9.269  Added -log option to the command line. Added to viewer menu the option "inverse image".
2019-09-20,  ASTAP 0.9.268  Fixed a window popup after failure to solve.

The ASTAP versions 0.9.264 / 0.9.265/ 0.9.266 / 0.9.267 are effected by a command-line mode bug. If used in the commandline mode and the solving fails an ASTAP window will open and wait for user input. It doesn't happen if ASTAP is used as a PlateSolve2 substitute. So only NINA and CCDCiel program users are effected.

These versions where available for download between 2019-9-17 and 2019-9-20. If you have one of these versions, please upgrade to version 0.9.268

2019-09-20,  ASTAP 0.9.267  Fixed a brief window popup after command line solving.
2019-09-20,  ASTAP 0.9.266a  Some changes in font size, mainly for Linux.
2019-09-19,  ASTAP 0.9.266  Introduced 90 degree rotation for the viewer.
2019-09-18,  ASTAP 0.9.265  Introduced automatic selection down sampling {=0}
2019-09-17,  ASTAP 0.9.264  Improved shutdown process when called from other program
2019-09-16,  ASTAP 0.9.263  
2019-09-15,  ASTAP 0.9.262  Added drop file(s) functionality.
2019-09-14,  ASTAP 0.9.261  Added an option to calibrate an image prior to solving. This intended for uncooled and therefore noisy cameras.
2019-09-11,  ASTAP 0.9.260  Improved SNR calculation and therefore solving of star rich images.
2019-09-10,  ASTAP 0.9.259  Added manual solving by entering two stars positions. Rewrote math of annotation.
2019-09-8, Minot tweak in the star databases.
2019-09-6,  ASTAP 0.9.258a  Cosmetic menu changes.
2019-09-4,  ASTAP 0.9.258  Blink routine, clears default the edges, fixed the star suppression problem, added a black spot filter for button "export aligned".
2019-09-3, released i386 and arm64 (aarch64) versions.
2019-08-31,  ASTAP 0.9.257a  Minor functionality changes for button "export aligned".
2019-08-30,  ASTAP 0.9.257  Added automatic scroll function for tab images. Added "export aligned" button to blink tab. Added at image tab extra column "star-level" to detect poor images. Poor sky transparency will give a lower value.
2019-08-29,  Added named bright stars to the deepsky database.
2019-08-28,  ASTAP 0.9.256  Fixed a galaxy orientation problem in the annotation routine.
2019-08-20,  ASTAP 0.9.255  Removed restrictions on FOV. Fields of 10 or 20 degrees are allowed. Added -o commandline option for MacOS, Others will follow.
2019-08-20,  ASTAP 0.9.254  For APT calls adapt PlateSolve2 behaviour to v2.28. Decimal separator follows Windows setting.
2019-08-17,  ASTAP 0.9.253  Fixed a star annotation problem in the 32 bit version.
2019-08-15,  ASTAP 0.9.253  Fixed a minor solver problem around RA=0.
2019-08-14,  ASTAP 0.9.252  Several small cosmetic changes and corrections.

2019-08-10,  ASTAP 0.9.251  Mayor work-over astrometric solver. Increased solving reliability at star database boundaries.

2019-08-6,  ASTAP 0.9.250  Added 16, 14 and 12 bit DSLR cameras options for deBayer method AstroC.  
2019-08-5,  ASTAP 0.9.249  Fixed a problem for Bias files, conversion raw to FITS.
2019-08-5,  ASTAP 0.9.248  Fixed a problem importing TIFF files with comments.
2019-08-5,  ASTAP 0.9.247a  Added in the colour smooth routine an automatic green correction to prevent purple stars
2019-08-4,  ASTAP 0.9.247  Modified colour smooth routine OSC images.
2019-08-4,  ASTAP 0.9.246  Adding automatically the user name to the path of the remote Astrometry.net
2019-08-2,  ASTAP 0.9.245  Fixed menu colour for other themes.
2019-08-2,  ASTAP 0.9.244  Added possibility to load settings. Modified directory of astap.cdg. For Windows moved to C:\Users\user name\AppData\Local\astap.  For Linux move to /home/username/.config/astap  Added .nef extension.
2019-07-28,  ASTAP 0.9.243  Avoiding reporting negative angles in PlateSolve2 mode. SGP seems to interpretate negative angles wrongly.
2019-07-23,  ASTAP 0.9.242  Fixed major bug colour correction if oversize was selected.
2019-07-22,  ASTAP 0.9.241  Fixed major bug in sigma clip stacking. Limited star annotation in crowded areas.
2019-06-23,  ASTAP 0.9.240  Improved viewer pop-up routine adding labels. Fixed the viewer browse problem in Linux.
2019-06-16,  ASTAP 0.9.239  Added to the viewer pop-up menu a new tool to measure the magnitude of extended deep sky objects.  See astap.htm#viewer_popup
2019-06-13,  ASTAP 0.9.238  Minor improvements photometry tab.
2019-06-11,  ASTAP 0.9.237a  Fixed a runtime failure in photometry
2019-06-11,  ASTAP 0.9.237   Improved photometry menu tab
2019-06-10,  ASTAP 0.9.236   Improved the batch option  in the viewer tools menu.
2019-06-9,   ASTAP 0.9.235   Improvements photometry tab
2019-06-8,   ASTAP 0.9.233/4   Program stacks now correctly images of different exposure. Fixed some small things in photometry tab. Fixed some run time problems in Photometry.  Fixed tools  option bin 2x2.
2019-06-7,   ASTAP 0.9.232   Fixed the command line solver for Raspberry Pi
2019-06-6,   ASTAP 0.9.231   Added variable star annotation. Fixed some problems in astrometric stacking if input files don't contains an initial position.
2019-06-4,   ASTAP 0.9.230   Added the file date of raw files to photometry.
2019-06-4,   ASTAP 0.9.229   Fixed some other problems in colour stacking.
2019-06-4,   ASTAP 0.9.228   Fixed an other major bug in the stacking routine. One problem in colour stacking outstanding.
2019-06-3,   ASTAP 0.9.227   Fixed an bug in colour stack mode.
2019-06-3,   ASTAP 0.9.226   Mayor code rework. Made two seperate tabs for blink and photometry. Fixes a major problem using astrometric alignment for stacking.
2019-06-2,   ASTAP 0.9.225   Improved ra, dec marker.
2019-06-1,   ASTAP 0.9.224   Improved magnitude measurement using statistics. Measuring exoplanets transits is now possible:

2019-05-30, ASTAP 0.9.223   Improved messaging blink routine. Removed markers saturated stars.
2019-05-29, ASTAP 0.9.222c  Upgraded the analyse button for the blink & photometry tab. Several other code improvements. 
2019-05-28, ASTAP 0.9.221   Added Julian day to Blink list. Improved some other things.
2019-05-28, ASTAP 0.9.219-220   Fixed some problems in the new blink routine.
2019-05-27, ASTAP 0.9.218   Significant update blink routine. It is now possible to measure a magnitude trend of a variable star. See option find variable stars.
2019-05-24, ASTAP 0.9.217   Improved FITS header of stacked images. DATE-OBS is now indicating the start time of the exposure.
2019-05-23, ASTAP 0.9.216   Added a possibility to add the rounded Julian day to keyword OBJECT.  This allows grouping of a large series based on time.
2019-05-18, ASTAP 0.9.215   Fixed some minor things.
2019-05-15, ASTAP 0.9.214   Fixed some FITS compatibility problems.
2019-05-14, ASTAP 0.9.213   Added HFD plot to CCD inspector.
2019-05-10, ASTAP 0.9.212   Modified astrometric solver routine. For images with low star count, the database search window is oversized rather then making small steps. Should work a little more reliable and faster for short exposure images.
2019-05-08, ASTAP 0.9.211   Fixed font used in HyperLeda annotation to 8.
2019-05-07, ASTAP 0.9.210   Fixed an error if no darks are available. Added compression to TIFF files.
2019-05-05, ASTAP 0.9.209   One instance only. If the program is associated with FITS image files or any format, it will show only one instance of ASTAP. After clicking on the second image it will be show in the first instance of ASTAP. If you want to open a second instance, just start ASTAP. If the program is started without parameters, you can open more instances.
2019-04-30, ASTAP 0.9.208  Added HyperLeda annotation to the tools menu.
2019-04-27, ASTAP 0.9.207  Removed dark filter. Without the resulting stacked image noise is lower due to DSNU (dark signal non-uniformity).
2019-04-26, ASTAP 0.9.206  Fixed blue pixels for monochrome images. Increased speed file of subtraction in pixel math.
2019-04-23, ASTAP 0.9.205  Moved saturation slider to viewer. 
2019-04-21, ASTAP 0.9.204  Modified smart colour smooth filter and some other items
2019-04-18, ASTAP 0.9.203  Added saturation adjustment in pixel math. Renamed "bright star colour filter" to "smart colour filter". Replaced smooth filter for LRGB by "smart colour filter."
2019-04-17, ASTAP 0.9.202  Cosmetic improvements only.
2019-04-15, ASTAP 0.9.201  Fixed a major bug in the alternative background calculation for astrometric solving.
2019-04-14, ASTAP 0.9.200  Improved the execution speed a little.
2019-04-14, ASTAP 0.9.199  Big improvement in AstroC demosaic method. Move demosaic preview option to pull down menu viewer.
2019-04-11, ASTAP 0.9.198  Added keywords cwhite, cblack to header. Some internal cleanup.
2019-04-6, ASTAP 0.9.197  Fixed a problem with applying dark and flats when selecting multiple images series. Prevent deepsky annotation overlap.
2019-04-4, ASTAP 0.9.196  Added the possibility to add the object position using the deepsky database. Double click on RA position in viewer. Intended forJPG, PNG files as start point for solver.  Fixed several other small things.

2019-03-31, ASTAP 0.9.195 Improve "Bright star smoother"for saturated stars OSC images. See pixe math. Apply this after OSC stacking and F9 (colour adust)
2019-03-28, ASTAP 0.9.194 Modified PlateSolve2 behavior. If you select in SGP the PlateSolve2 setting "Max Regions" (=3000) this will force a search up to 90 degrees diameter. However the solver will be most likely stopped halfway by a SGP timeout. Improved DEC format in popupnotifier.
2019-03-26, ASTAP 0.9.193 Adapted stacking for images with background above 32000.
2019-03-24, ASTAP 0.9.192 Modified stacking routine. Image background will be brought to the same level (1000) prior to stacking.
                                               Modified native command line. Change -dec to -spd (south pole distance). Command line doesn't allows negative values.

2019-03-23, ASTAP 0.9.191 Added a pop-up notifier for command line only.
2019-03-21, ASTAP 0.9.190 Added gradient tool to pixel math. Fixed a problem with drizzle.
2019-03-16, ASTAP 0.9.189 Fixed quality filter. Repeated analyse has no influence.
2019-03-16, ASTAP 0.9.188 Added percentage to filter out worst images. Removed a solution check from blinking which caused problems.
2019-03-12, ASTAP 0.9.187 Forcing delete of old solutions of new files in the browser to blink.
2019-03-7, ASTAP 0.9.186 Fixed a failure reporting parameter in the PlateSolve2 report output.
2019-03-7, ASTAP 0.9.185 Reduced search field using Platesolve2 commandline with factor 2.
2019-03-4, ASTAP 0.9.184 Fixed a format problem with strings in FITS header.
2019-03-4, ASTAP 0.9.183 Added a noise removal routine. Some minor adjustments.
2019-03-1, ASTAP 0.9.182 Improved astroC demosaic method. Prevented clamping if  colours are adjusted.
2019-02-27, ASTAP 0.9.181 Improved bayer drizzle demosaic routine, fixed a problem in AstroM demosaic routine, added local monochrome and gaussian blur in mouse pop-up. Local monochrome is to fix colour problems in bright stars.
2019-02-22, ASTAP 0.9.180 Allowed reading FITS keywords with string values other then start position 11.
2019-02-20, ASTAP 0.9.179 Fixed a problem with saving solved jpeg/png/tiff files using Astrometry.net
2019-02-20, ASTAP 0.9.178a Compiled for Hi-DPI, 4k monitors
2019-02-18, ASTAP 0.9.178 Allow stacking of JPEG, TIFF files. For command line use of solver, FOV of fits file keys overrules specified FOV.
2019-02-17, ASTAP 0.9.177 Fixed 16 bit monochrome PNG export. Added help for statistical filtering.
2019-02-16, ASTAP 0.9.176 Added statistical filtering images. Added 16 bit PNG support.
2019-02-10, ASTAP 0.9.175 Increased the speed by suppressing update memo in viewer while handling files. Changed some default settings.
2019-02-09, ASTAP 0.9.174 Added background and noise level to darks en flats file list. Added 4x4mean for flats. Added "reset to default settings" menu option.
2019-02-08, ASTAP 0.9.173 Added Bayer-drizzle demosaic routine. Fixed XISF reader for files with larger header.
2019-02-07, ASTAP 0.9.172 Fixed a runtime error bug using astrometric alignment and flats or darks.
2019-02-06, ASTAP 0.9.171 FIXED MAJOR BUG. FLATS WHERE NOT USED CORRECTLY IN THE LAST VERSIONS.  Added AstroC demosaic routine for better saturated star color. Will work on a Bayer Drizzle demosaic routine in next version.
2019-02-05, ASTAP 0.9.170 Fixed a run time failure in the OSC colour stack routine.
2019-02-05, ASTAP 0.9.169 Improved remove deepsky routine. Added at pixel math an option to apply a flat (colour or mono) manually.
2019-02-04, ASTAP 0.9.168 Added a routine to fix colouring of saturated stars.
2019-01-24, ASTAP 0.9.167 Improved XISF reader. Modified create FITS header  routine.
2019-01-24, ASTAP 0.9.166 Adding copy image list information to clipboard. This allows export of FITS file keyword data such as HFD, temperatures, altitude, focuser position to a spreadsheet for analysis.
2019-01-22, ASTAP 0.9.165 Extensive code optimisation. Added some extra messages for colour stacking. Added 64 bit float XISF import. Fixed FITS generation for PlateSolve2 substitute use.
2019-01-18, ASTAP 0.9.164 Added possibility to read uncompressed XISF files.
2019-01-16, ASTAP 0.9.163 Fixed/improved artifical flat-correction tool. Reorganised pixel math menu's.
2019-01-15, ASTAP 0.9.162 Adapted the (star) saturation detection to the dark subtracted.
2019-01-15, ASTAP 0.9.161 For manual alignment, changed behaviour for locking on objects.
2019-01-14, ASTAP 0.9.160 Improved interface/handling of marked objects for manual alignment. So the object selection stays at the same place when you swipe/zoom.
2019-01-13, ASTAP 0.9.159 Fixed a problem with manual stacking for seperate R, G, B files.
2019-01-11, ASTAP 0.9.158  Added a check in the manual stacking to test if all images have a reference object selected.
2019-01-11, ASTAP 0.9.157  Added auto for +x- tool in pixel math. Added preserve routine for saturated stars. Added demosaic method astro-bilinear-interpolation
2019-01-09, ASTAP 0.9.155/6  Modified histogram and stack routine for colour due to some problems.
2019-01-08, ASTAP 0.9.154  Fixed some colour problems, added background colour removal tool in pixel math.
2019-01-05, ASTAP 0.9.153  Fixed some things for OSC images. Made some minor modifications in manual alignment interface. Added color smoothing filter in pixel math
2019-01-01, ASTAP 0.9.152  Fixed new demosaic method for stacking. Was not selectected
2018-12-29, ASTAP 0.9.151 Added de-mosaic method based on "HIGH-QUALITY LINEAR INTERPOLATION FOR DEMOSAICING OF BAYER-PATTERNED COLOR IMAGESHenrique S. Malvar, Li-wei He, and Ross Cutler"
2018-12-29, ASTAP 0.9.150 Fixed some bugs for OSC images.
2018-12-27, ASTAP 0.9.149 Improved code at many places. JPEG, PNG formats are now beter integrated. Improved solver.
2018-12-27, ASTAP 0.9.148 Modfied space bar refresh. Was influencing typing image center position.
2018-12-21, ASTAP 0.9.147 Added distortion tool. Several other small corrections.
2018-12-14, ASTAP 0.9.146 Fixed live distance calculation.
2018-12-13, ASTAP 0.9.145 Fixed solving JPEG images.
2018-12-09, ASTAP 0.9.144 Released MacOS version with correct color and DCRAW integrated.
2018-12-08, ASTAP 0.9.144 More menu improvements.
2018-12-07, ASTAP 0.9.143 Some menu improvements.
2018-12-05, ASTAP 0.9.142 Added the possibility to force the star database used.
2018-12-04, ASTAP 0.9.141 Added importing PFM format (32 bit float export from Photoshop). Fixed a problem in PPM/PGM reading.
2018-12-04, ASTAP 0.9.140 Mayor overhaul in stretching routine. Colour preserving stretching introduced. Faint stars and nebula keep now their colour. 
2018-11-27, ASTAP 0.9.139 Small changes, introduced artificial colouring function in pixel math.
2018-11-25, ASTAP 0.9.138 Adapted solving for very large fields. Introduced cropping and "forge small search steps" for this.
2018-10-30, ASTAP 0.9.137 Cosmetic changes.
2018-10-29, ASTAP 0.9.136 Fixed some problems with file selection.
2018-10-29, ASTAP 0.9.135 Fixed some problems with RAW files.
2018-10-29, ASTAP 0.9.134 Allowing stacking of DSLR RAW files directly.
2018-10-27, ASTAP 0.9.133 Improved help file and link.
2018-10-26, ASTAP 0.9.132 Improved dark images handling for sensors with amp-glow.
2018-10-24, ASTAP 0.9.131 Image dimensions in degrees is now also indicated after solving.
2018-10-22, ASTAP 0.9.130  Some minor menu corrections
2018-10-20, ASTAP 0.9.129  Raspberry PI 3 version
2018-10-19, ASTAP 0.9.129  macOS version
2018-10-11, ASTAP 0.9.128, Improved equalising background for image stitching mode (mosaic). Fixed some small bugs.
2018-10-10, ASTAP 0.9.127, Fixed PlateSolve2 command line for use with SGP or APT and DSLR cameras. Start position was only taken from FITs header not command line. Added log file called "documents\astap_log.txt" for PlateSolve2 commands only.
2018-10-8, ASTAP 0.9.126, Overhauled the image stitching routine (mosaic). Better adaption to different tiles. Overhauled vertical/horizontal swap routine to fix one image line
2018-10-5, ASTAP 0.9.125, Overhauled stack history in FITS header. Now full stacking history available in FITS header
2018-10-4, ASTAP 0.9.124, Stacking speed at least four times faster!
2018-10-2, ASTAP 0.9.123, Made dark spot filter permanent active. Improved the dark spot filter.
2018-10-1, ASTAP 0.9.121/122, fixed a problem combining colours with one rotated.
2018-10-1, ASTAP 0.9.120, added the possibility to add a pedestal value to the final stack result to prevent negative values.
2018-9-29, ASTAP 0.9.119, Fixed a tiny error (1,5 pixels) for center position calculated by the solver.
2018-9-28, ASTAP 0.9.118b, Gained 1% astrometric solving speed by stripping some code in star database read routine. Note that the 32 bit version performance 66% slower in a 64 bit system. So download the 64 bit version if your system is 64 bit.
2018-9-27, ASTAP 0.9.118, Fixed a bug in reading star database for finding astrometric solution, slower speed but increased reliability.
2018-9-25, ASTAP 0.9.117a, PlateSolve2 mode, program waits with closing till apm file is existing on disk.
2018-9-25, ASTAP 0.9.117, Optimized magnitude control loop. Solving about twice as fast.
2018-9-25, ASTAP 0.9.116, Optimized star detecting algorithm using images from Astrometry.net upload.
2018-9-24, ASTAP 0.9.115, Added the -s and -t command line option. Added some checks for file handling. Writes and additional .ini file in PlateSolve2 command line mode for debugging.
2018-9-21, ASTAP 0.9.114, Perfected search pattern in the sky removing any duplication.
2018-9-20, ASTAP 0.9.113, Bug fix edition. Achieving blind solve of a 50 seconds exposure with an offset of 180 degrees distance in 380 seconds!
2018-9-19, ASTAP 0.9.112, Adapted -32 bit fits reader to 0..1 scale.
2018-9-19, ASTAP 0.9.111, Relaxed on double star detection. Some minor fixed and added some hints.
2018-9-16, ASTAP 0.9.110, Fixed a slow down by star detection.
2018-9-16, ASTAP 0.9.109, Fixed some other problems.
2018-9-16, ASTAP 0.9.107, Fixed binning.
2018-9-16, ASTAP 0.9.106, Mayor overhaul in solving engine. Introduced down sampling/binning. Numerous small improvements.
2018-9-12, ASTAP 0.9.105, Increased accuracy of angle reported by the internal solver. Fixed bug in saving 16 bit images for values above 32k. Added caret indication for fits header. Many small improvements.
2018-9-7,  ASTAP 0.9.104, added test image generation in pixel math. 
2018-9-4,  ASTAP 0.9.103, added a warning for the case that a restore hot-pixels is used and too many pixels are restored. This could happen for cameras with amp-glow.
2018-9-1,  ASTAP 0.9.102, some cosmetic improvements.
2018-8-29,  ASTAP 0.9.101, improved file naming.
2018-8-29,  ASTAP 0.9.100, code optimisation.
2018-8-29,  ASTAP 0.9.99, Added two new filters for LRGB color images. The 3x3mean and 2x2mean. The 3x3mean works wel.
2018-8-28,  ASTAP 0.9.98, Fixed some things in astrometric stacking.
2018-8-27,  ASTAP 0.9.97, For Windows moved astap.cfg from documents folder to to \user\username Fixed a problem plate solving twice.
2018-8-24,  ASTAP 0.9.96, Fixed FWHM calculation. Improved HFD calculation for faint stars.
2018-8-22,  ASTAP 0.9.95, Viewer improvements. Preserving now the plate solving in case the image is cropped. Memo containing the FITS header is now updated instantly in case image is cropped or made mono.  Ctrl-Z is also restoring the FITS header.
2018-8-18,  ASTAP 0.9.94, Added colour annotation of stars if G16 star database is present. Remove G17.
2018-8-16,  ASTAP 0.9.93, Added experimental photometry option to the viewer. After plate solving, select calibration photometry in the viewer tools menu. This will allow magnitude measurement of the stars.  The magnitude values is displayed in the status bar. The G17 database will give BP magnitudes for unfiltered mono CCD's.  If replaced by the G16 and a Johnson-V filter is used it will give Johnson-V  values.  Works for mono/red  channel only.
2018-8-14,  ASTAP 0.9.92a, Minor text and hint updates.
2018-8-13,  ASTAP 0.9.92,   New blink routine. New alignment option to calibrate images only. Some minor menu improvements.
2018-8-05,  ASTAP 0.9.91,   Some minor menu improvements.
2018-7-31,  ASTAP 0.9.90,   Added some functions to pop-up menu of the thumbnails viewer.
2018-7-30,  ASTAP 0.9.89,   Added thumbnails option for viewer.
2018-7-27,  ASTAP 0.9.88a,   Fixed some text labels in the Linux version.
2018-7-27,  ASTAP 0.9.88,   Minor correction in the menus. 
2018-7-26,  ASTAP 0.9.87,   Added a preview button. Preserve filterindex of the openfile and savefile dialogs
2018-7-22,  ASTAP 0.9.86,   Added new remove borders tool (see pop-up menu)
2018-7-22,  ASTAP 0.9.85,   Fixed a fatal problem in sigma clip stacking.
2018-7-19,  ASTAP 0.9.84,   Fixed a run-time problem with de-mosaic Bayer. Introduced manual alignment.
2018-7-16,  ASTAP 0.9.83,   Added super-pixel option for demosaic RAW OSC images.
2018-7-14,  ASTAP 0.9.82,   Added split function for RAW Bayer array images. This will split them into seperate R,G,G, B files.
2018-7-14,  ASTAP 0.9.81,   Fixed conversion routine for digital cameras using DCRAW.

2018-7-13,  ASTAP 0.9.80,  Mayor update. All darks, flats and bias will automatic processed into masters. Activate classify by dark temperature, exposure and flat field filter.
Secondly added color matrix.


2018-7-6,  ASTAP 0.9.79,  Added log file which will be written after stacking.
2018-7-6,  ASTAP 0.9.78,  Fixed a FITS write problems. Improved counting darks, flats and flat-darks
2018-7-4,  ASTAP 0.9.77,  Added export to 16 bit PGM and PPM format. Several small improvements.
2018-7-3,  ASTAP 0.9.76,  Added PGM and PPM format. Added DCRAW program by David Coffin for conversion of many camera files.
2018-7-2,  ASTAP 0.9.75,  Modified & improved LRGB stacking method. Stars are removed from the RGB stack using the most common filter. Then a Gaussian blur is applied with the same factor to remove any square artifacts if any. Fixed a severe problem with uppercase .FIT extension. Added image to FITS conversion tool. Fixed a color stacking problem introduced a week ago.
2018-6-30,  ASTAP 0.9.74,  Improved mosaic mode. Some menu improvements.
2018-6-29,  ASTAP 0.9.72,  Improved mosaic mode. Some menu improvements.
2018-6-28,  ASTAP 0.9.71,  Fixed background routine. Change introduced in v0.9.68 didn't work.
2018-6-26,  ASTAP 0.9.69,  Added star annotation. See tool pulldown menu.
2018-6-26,  ASTAP 0.9.68,  Fixed missing colour for LRGB stacking.
2018-6-23,  ASTAP 0.9.67,  Fixed problem applying oversize twice.
2018-6-22,  ASTAP 0.9.66,  Improved mosaic mode. Introduced drizzle.
2018-6-16,  ASTAP 0.9.65,  Fixed some menu problems for stacking, improved RA, DEC indication, added shutdown after completion option.
2018-5-26,  ASTAP 0.9.64,  Fixed annotation for flipped images (newton style telescopes), and detection missing star database.
2018-5-22,  ASTAP 0.9.62,  Adaption to High-DPI systems
2018-5-20,  ASTAP 0.9.61,  Fixed a problem with viewer data range settings
2018-5-19,  ASTAP 0.9.60,  Added annotation to command line
2018-5-18,  ASTAP 0.9.59,  Introduced deep sky annotation under pull-down menu tools.

2018-5-18,  ASTAP 0.9.58,  Some improvement for stacking.
2018-5-18,  ASTAP 0.9.57,
 Fixed a bug for mono imigaes introduced in version 0.9.56
2018-5-17,  ASTAP 0.9.56,  Fixed Maxim DL file compatibility
2018-5-16,  ASTAP 0.9.55,  Fixed some problems for color image stacking.
2018-5-14,  ASTAP 0.9.54,  Stack menu improvements.
2018-5-13,  ASTAP 0.9.53,  Introduced dark spot filter for CMOS stacked images.
2018-5-13,  ASTAP 0.9.52,  Fixed scroll bars stack menu.
2018-5-12,  ASTAP 0.9.51,  Added the FITS preview option to the file open dialog. See below. Fixed standard deviation indication. Fixed gamma setting when loading an image.

2018-5-11,  ASTAP 0.9.50,  Fixed a problem in the command line in version 0.9.49
2018-5-11,  ASTAP 0.9.49,  Fixed several small items for stacking.
2018-5-8,  ASTAP 0.9.48,  Adapted for the new Gaia DR2 database. It will work with U16, G17 or G18 database.
2018-5-6,  ASTAP 0.9.47,  Introduced  the local equalising command to remove dark areas in stacked images. See pop-up menu. Fixed some small things. Program reads now focal length and pixel size from Maxim DL files,
2018-5-3,  ASTAP 0.9.46,  Changed back the previous setup v0.9.44 for filename as paramstr(1)
2018-5-3,  ASTAP 0.9.45,  Fixed the Platesolve2 command line.
2018-4-30,  ASTAP 0.9.44,  Several small improvements.
2018-4-28,  ASTAP 0.9.43,  Plate solve improvements for images going very deep. So speed improvements plate solving. v0.9.41 and 0.9,42 have a bug for large amount of stars.
2018-4-27,  ASTAP 0.9.40,  Many small improvement. Improved reliability. Introduced overlap based on the number of pyramids in the image.
2018-4-26,  ASTAP 0.9.39,  Small improvements in plate solving . Added a check on number of stars and pyramids in image.
2018-4-25,  ASTAP 0.9.38,  Small improvements in plate solving. Automatic diameter selection
2018-4-24,  ASTAP 0.9.37a,  Build the new command line interface for accessing the plate solver. See command line options
2018-4-23,  ASTAP 0.9.36,  Improved speed conversion PNG, JPG, TIF to FITS.
2018-4-22,  ASTAP 0.9.35,  Modified PlateSolve2 simulation.
2018-4-21,  ASTAP 0.9.34,  Removed PlateSolve2 dependency. Rename the program to PlateSolve2.exe will work using the internal solver.  So full replacement for PlateSolve2.  For a 30 degrees offset if will find a solution after 4 minutes or earlier.
2018-4-20,  ASTAP 0.9.33,  Fixed some detections levels for plate solving.
2018-4-19,  ASTAP 0.9.32,  Added adjustable minimum number of pyramids required. Typical value for stacking 6 and just plate solving 3.
2018-4-19,  ASTAP 0.9.31,  Fixed application path to the U16 files.
2018-4-19,  ASTAP 0.9.30,  Added internal plate solver.
2018-4-18,  ASTAP 0.9.29,  Improved alignment.
2018-4-16,  ASTAP 0.9.28,  Improved alignment. Checking for outliers. Scaling factor no longer required.
2018-4-12,  ASTAP 0.9.27,  Improved log in FITS header. Fixed some bugs. 
2018-4-12,  ASTAP 0.9.26a,  Added some image info to the status bar. Introduced Windows installer. 
2018-4-10,  ASTAP 0.9.26,  Automatic sorting of lights, dark and flats. Pop-up menu has option to update keywords of multiple files. Free sizing of FITS files and noise generator in pixel math. 
2018-4-9,  ASTAP 0.9.25a, Allowing filtering on exposure & temperature for darks and filter for flats.
2018-4-8,  ASTAP 0.9.24, Allowing images of different astronomical scale. Intended for combining RGB of a lower resolution with Luminance images, e.g. H-alpha. Several other improvements
2018-4-5,  ASTAP 0.9.23c, Allowing file name as parameter with spaces. So you set ASTAP as default viewer for FITS, PNG, TIFF, JPG. Improved reporting in FITS header.
2018-4-4,  ASTAP 0.9.23a, Introduced results page. Fixed image counting. Added image dimensions to the list. Fixed an icon
2018-4-3,  ASTAP 0.9.22, Several improvements. Allowing combing colour images with H-alpha.
2018-4-2,  ASTAP 0.9.20, Fixed Gaussian blur in LRGB stacking. Fixed runtime error in saving flats and flat darks. Fixed sigma clip stacking for LRGB.
2018-4-2,  ASTAP 0.9.18a, Fixed 16 bit saving.
2018-4-1,  ASTAP 0.9.18, Fixed regional settings. Ignore space character object name aand filter name. Fixed RGB+L stacking.
2018-3-31,  ASTAP 0.9.17, Several fixes LRGB stacking. Fixed color model LRGB stacking.
2018-3-30,  ASTAP 0.9.13b  Big overhaul in stack menu. Now you can stack several objects in one run. RGB and LRGB stacking is also possible.  Files in listview menu can be selective removed, added or stacked. Program uses now images with lowest HFD as reference.
2018-3-23,  ASTAP 0.9.12  Overhauled star detection and image inspector. Improved menu of image equalising.
2018-3-18,  ASTAP 0.9.11 Overhauled alignment menu and manual. Introduced on-line help.
2018-3-17,  ASTAP 0.9.10c Overhauled the PlateSolve2.exe simulation. (rename astap.exe to PlateSolve2.exe Very fast now and FITS images are reduced to window size for displaying in HNSKY.  Some minor corrections.
2018-3-16,  ASTAP 0.9.9a Fixed a PNG and JPEG display problem for Nvidia graphic cards.
2018-3-14,  ASTAP 0.9.9 New internal star alignment! No need for plate solver !
2018-3-4,  ASTAP 0.9.7 Fixed Platesolve2 simulation. (Rename astap.exe to platesolve2.exe)
2018-2-20,  ASTAP 0.9.5 Small improvements.
2018-2-19,  ASTAP 0.9.4 Several small improvements, oval shape selection area for removal deepsky.
2018-2-18,  ASTAP 0.9.2, 0.9.3 Several small improvements
2018-2-16,  ASTAP 0.9.1,  Added tilt measurement to CCD inspector, Added background equalization tool under pixel math.
2018-2-14,  ASTAP 0.9.0,  Improved vieuwer low, medium, high settings. Fixed deleting files of astromentry.net.
2018-1-15,  ASTAP 0.4.4,  Added multi selection in image list.
2017-12-17,  ASTAP 0.4.3,  Improvement in CCD inspector and image analyser.
2017-12-16,  ASTAP 0.4.2,  Added CCD inspector. Fixed image analyser problem.
2017-12-16,  ASTAP 0.4.1,  Added access to Astrometry.net running in a Win10 Linux subsystem.
2017-12-12,  ASTAP 0.4.0b,  Fixed long commands for astrometry.net
2017-12-12,  ASTAP 0.4.0a,  Added some error messages for local astrometry.net. Improved live reporting astrometry.net
2017-12-12,  ASTAP 0.4.0,   First release Linux version, Several improvements.
2017-11-30,  ASTAP 0.3.0,  Several improvements.
2017-11-30,  ASTAP 0.2.2,  Several improvements, introduced median-equalise filter.
2017-11-29,  ASTAP 0.2.0,  Several improvements.
2017-11-24,  ASTAP 0.1.5,  Added mosaic equalise background mode.
2017-11-23,  ASTAP 0.1.4,  Added sort possibility to image list. You can sort on HFD or any other column.
2017-11-22,  ASTAP 0.1.3,   Stacked files are now marked as ......stacked.fit and ignored if tried to stack again. Adapted tiff 32 bit export to full range. Moved naxis3 up to position 5 in the keywords. Finding solution  is now done at the beginning of  stacking (if header is not used}
2017-11-21,  ASTAP 0.1.1a  Fixed some minor things. Simplied pixel size for astrometry.net solver.
2017-11-20,  ASTAP 0.1.1  Many small improvements. CMD console is now monitored and if closed action is taken.
2017-11-19,  ASTAP 0.1.0  Added SIP (Simple Imaging Polynomial)  support, Write FITS files as multiple of 2880 bytes. Fixed several small things.
2017-11-17,  ASTAP 0.0.9a  Fixed color conversion using astrometry.net,  added the header from first FITS to stacked image. Log follows resizing of stack menu. Improved Windows interface,. Adaption to PixInSight -32 bit files.
2017-11-16,  ASTAP 0.0.8  Fixed some problems including using PlateSolve2.
2017-11-15,  ASTAP 0.0.7a  Fixed Digital development Process for color and some small improvements.
2017-11-13,  ASTAP 0.0.7  Improved viewer menu and performance. Improved export routine including streched TIFF files and variable JPEG compression. Select the correct file in file dialog.
2017-11-12,  ASTAP 0.0.5  New dark filter.
2017-11-11,  ASTAP 0.0.4  Added a FITS crop function using the right mouse button.
2017-11-10,  ASTAP 0.0.3  Fixed a dark subtraction problem in mode average.
2017-11-10,  ASTAP 0.0.2  New name ASTAP. Added digital development and several other improvements.
2017-11-8,  ASTAP 0.0.1  Added Astrometry.net local and several improvements.
2017-11-5,  ASTAP 0.0.0e  Fixed regional decimal seperator problem.
2017-11-2,  ASTAP, Astrometric Stacking Program version 0.0.0 (2017-11-2). This replaces HNS_FV



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