of the HNSKY planetarium program.
Please send you comments or bug reports to
Added IAU and Astronomy magazine constellation supplements,
HNSKY 4.1.7, fixed a problem with the deepsky level slider. Adapted the
server communication for frames import by the APT program.
2019-9-8 Minor update of the G16, G17, G18 databases
2019-9-7 Repacked using an (older) installer compatible with Windows XP.
HNSKY 4.1.6c Added an arm64 (aaarch64) version for Pi computers
running a 64 bit operating system. Modified the http file download for
HNSKY 4.1.6b Modified code for pulling a rectangle and measuring frame to be compatible with Raspian Buster.
HNSKY 4.1.6a Update for Linux version, fixing OpenSSL problem using the latest Linux distributions.
HNSKY 4.1.6 Modified displaying FITS images that for all sources the
same brightness settings are required. Fixed in themes version a
display problem with image brightness trackbar.
HNSKY 4.1.5 Fixed displaying SkyView fits files for very wide field.
(Mellinger survey) Added experimental mosaic design export. Fixed
OpenSSL problem for some new Linux versions.
HNSKY 4.1.4a Fixed deleting a mosaic rectangle. Updated help file description designing a mosaic.
HNSKY 4.1.4 Modified star database routine for small speed
improvement. Removed JPL ephemerides links. In settings added buttons
for path selection.
HNSKY 4.1.3a Some cosmetic improvements. In the Linux version added a watchdog for internet access.
HNSKY 4.1.3 Added Simbad online search. The RA, DEC grid gets ground colour below horizon.
HNSKY 4.1.2a. Fixed a problem in hnsky_themes version with the object
menu. Added support for kchmviewer to read deepsky.chm file.
HNSKY 4.1.2. Added a HNSKY themes version. For 64 bit systems two HNSKY
versions are installed. The second HNSKY_themes follows the Win10
themes. Disadvantage is that the pull down menu text is always black.
Select a lighter background colour to compensate.
HNSKY 4.1.1. Overhauled the menus to allow one source code for Windows,
Linux and Linux Raspberry Pi. More space is introduced to prevent
overlapping in other operating systems.
2019-6-25 HNSKY 4.1.0b. Fixed some browser help problem in the Linux versions.
2019-6-19 HNSKY 4.1.0. minor improvements.
Added two new variable star supplements:
- GCVS 800 short period variable stars.sup
- GCVS 22500 variable stars.sup
version 4.1.0ß1 Deep sky objects are now in one single file
"deep_sky.hnd". For deep sky level setting a seperate slider is created.
Therefore any search will look through the whole database.
version 4.0.5a HyperLeda, change magnitude limit from vt to bt.
Fixed search radius. Fixed astroid update for previous year data.
Updated the local HyperLeda database.
version 4.0.5 Magnitude of downloaded online database is now
limited by magnitude setting in the object menu. this will speedup
version 4.0.4 New, online query HyperLeda and Simbad is plotted in map! Ned still goes to browser.
version 4.0.3a,b Added get_position command to TCP/IP server.
version 4.0.3 Adapted to standard colour FITS files (naxis3=3).
So any FITS files which is solved should be displayed correctly.
version 4.0.2b,c Greatly improved reading external fits files.
Contrast/data range is better adapted. Added keywords cwhite,
cblack to fits file reading for better range settings.
2019-4-8 New German translation by Guido Hollenstein added.
version 4.0.2a, Added: If asteroid file for this year is not available, download previous year.
version 4.0.2, Added precession correction for celestial north & south cross. Same for polar scope view.
version 4.0.1, Finalised Alpaca, improved polar alignment scope
window, fixed a center problem if telescope tracking was on.
version 4.0.1ß4, fixed equinox and some other things.
version 4.0.1ß1x, first edition with internal ASCOM Alpaca client.
version 4.0.0x, improved ASCOM error handling. Fixed background colour trackbars of object menu.
version 4.0.0w, added moon Charon (Pluto) internal and as supplement. Note Pluto and Charon are both rotating around barycenter which is outside Pluto, so it is not perfect.
version 4.0.0v, fixed some artifacts drawn by the measuring frame at high zoom factors.
version 4.0.0u, A CCD frame is now a single object in supplement 2.
This allow to retrieve the center position. Updated the server commands
for CCD frame control. New frame angle definition conform PA for deep
version 4.0.0t, added a delete_frame command for the sever. Second name
of object is reported after a server object search. For frames this is
the frame center position.
version 4.0.0s, fixed a problem in the object menu, selecting supplement 2.
version 4.0.0r, minor corrections in editor.
version 4.0.0q, overhauled the INDI client
2018-6-23, updated Catalan translation en Esperanto.ini
version 4.0.0p, Added three supplements for Nereid (Neptune
moon), Iapetus (Saturn moon) and Pasiphae (Jupiter Moon.) These
supplements only work only with version 4.0.0p
2018-6-6, updated the help file
version 4.0.0o2, Fixed again Fixed Galilean moons calculation.
Added in settings adjustment for Jupiter Great Red Spot transit times
- fixed a bug
in Galilean moons calculation and updated red spot calculation.
- fixed night vision mode for Linux
- Added missing tyc_717.290 to Windows installer
version 4.0.0m2, replaced editor since it was causing problems under Linux.
version 4.0.0L3, online version of Gaia has also star colors. Released
version III of the G16 with all bright stars having colour information..
version 4.0.0L2, fixed random but wrong colour indication for databases other then G16. Released Linux version 4.0.0L.
version 4.0.0L & new G16 database including Gaia colour
information. This new database will only work with version 4.0.0L
2018-5-28, HNSKY version 4.0.0k adaption of icons to Hi-DPI.
2018-5-23, HNSKY version 4.0.0j minor cosmetic improvements in menus
2018-5-22, HNSKY version 4.0.0i2 Cosmetic improvements in menus
2018-5-20, HNSKY version 4.0.0i
Adapted to Hi-DPI settings up to 192 dpi. Please report any
problem with missing label or wrong position in the menu's. Many items
have been adapted and something could be set wrong.
2018-5-16, Linux 4.0.0h, Windows v4.0.0h1. Compiled with compiler option Hi-DPI.
2018-5-15, Updated help files.
2018-5-10, HNSKY 4.0.0h, removed GSC star catalogue support.
2018-5-8, Native star database up to magnitude 18 based on Gaia DR2 released.
Zoom in to the milky way to see stars up to magnitude 18. Please
update HNSKY to version 4.0.0.g for correct slider settings.
2018-5-7, New Gaia DR2 based native star database. Magnitude is photographic BP. A Johnson V and visual magnitude will follow.
2018-4-25, HNSKY version 4.0.0e, adapted online Gaia to DR2 release. Improved plotting speed in some cases by 10-20%
2018-4-23, Updated Catalan translation.
2018-4-11, Added to two supplements, one with all stars within 100 light years and one with all stars with G2V spectrum.
2018-4-11, HNSKY version 4.0.0e, fixed broken FITS routine of 4.0.0d
2018-4-11, HNSKY version 4.0.0d, modified the "max magnitude" slider effect on asteroids. Less are displayed.
2018-4-5, HNSKY version 4.0.0c, build in a protection against compressed FITS files.
2018-4-1, HNSKY version 4.0.0b, fixed a problem starting the editor containing a large file.
2018-3-27, HNSKY version 4.0.0a, fixed the position of the mosaic building rectangle for mean and apparent coordinate systems.
2018-3-26, Maintenance update. Improved Occult import, Fixed numerical integration of large asteroid files.
2018-3-23, Maintenance update. Added small step zoom by Shift+Mouse wheel and small step rotation by Alt+Mouse wheel.
2018-3-19, Adapted asteroid import for Occult .csv format.
2018-3-14, fixed the help files for Chrome browser
2018-3-7, HNSKY version 4.0.0 is final and released
The program main changes compared with 3.4.0 are:
- Improved swipe functionality
New improved telescope cursor, the telescope is position is now shown
as correct sized and orientated rectangle. Orientation can be set
manually with mouse wheel while holding CTRL key down.
- Added possibility to design mosaics. (measuring frame on, hit HOME. To remove rectangle hit CTRL+DEL)
- Goto menu has slew to functionality if "track telescope is on".
- Three-state check-mark for asteroids and comets. Grayed=all, checked=auto
Three-state check-mark for star names. Off=bright stars only,
Grayed=supplement stars only. Checked=All star names.
- Vizier online server for star catalogue can be set in settings.
- Added PPMXL online star catalog.
Added Lynds (LBN) supplement containing 1125 bright nebula as
supplement and brightest to the deepsky level 3 database.
Added Hickson Compact Groups of Galaxies (HCG as separate
supplement and to the deepsky level 3 database.
New improved telescope cursor:
Building mosaics:2018-1-1, HNSKY 4.0.0ß1,first release, executable only. No changes in layout and
functionality except swiping (left mouse button down) goes now very smooth with some overlap at fields <40
degrees. Mayor re-coding of graphic routine was required.
HNSKY for Windows version 3.4.0b.
Asteroid editor sees now .txt files from Minor planet making import easier.New program released:
2017-11-2, ASTAP, Astrometric
Stacking Program version 0.0.0ß (2017-11-2). This replaces HNS_FV
0.0.0ß28. Fixed a small mouse wheel problem in Win7 only.
HNSKY for Windows & Linux version 3.4.0a1
, fixed the help
call of the editor, Linux fixed installation under education.
& Linux version 3.4.0a
fixed the help of the setting menu. HNS_FV
0.0.0ß27, added HFD and FWHM values to the info
HNSKY for Windows & Linux version 3.4.0. released.
stable version 3.3.5k, fixed some non-English language
problems and overhauled repaint.
, Windows beta 3.4.0ß17
version 3.3.5, overhaul drawing routine. Prepared for
beta 3.4.0ß16, small modification in server output for the
measuring frame angle.
Demonstration video of the server link between APT
3.3.7 & HNSKY 3.4.0ß and HNS_FV
Demonstration video of the server link between CCDciel
0.0.0ß26, fixed front-end problems. Now you can rename it as
PlateSolve2.exe and it will create plate solved FITS files
Windows stable version 3.3.5j and Windows/Linux beta 3.4.0ß15
overhauled the CCD measuring frame routine resulting in a
version 3.3.5i and beta 3.4.0ß14 , CCD measuring frame can be
free rotated using Ctrl + Mouse scroll wheel.
version 3.3.5h with cosmetic changes. Final version 3.4.0 will
be issued soon, HNS_FV
and Windows v3.4.0ß13_FPC, server bug fixes.
and Windows v3.4.0ß12_FPC, updated the server
. For communication with Astro
the near future.
0.0.0ß24, added histogram and pop-up menu. Find
double click. Fixed conversion of JPG and PNG files.
Deepsky database update. code optimalisation for Windows
and Windows & Linux version v3.4.0ß11_FPC. Fixed auto
savings in FPC version.
v3.3.5f and v3.4.0ß9_FPC, Minor improvements in
and Linux v3.4.0ß8_FPC, Improved again swipe
Windows v3.3.5e2, swipe cursor update.
v3.4.0ß7_FPC, fixed auto connect telescope, swipe cursor
Improved swipe reliability.
Linux and Windows v3.4.0ß5_FPC, live swipe. See Youtube
Fixed automatic daylight savings for time zones in
Windows v3.3.5b, c, d, e live swipe. See Youtube
Fixed automatic daylight savings for time zones in
Windows v3.3.5a, / v3.4.0ß4, delayed the swipe cursor a
few pixels. Fixed asteroid import from Occult.
Windows v3.3.5, added basic swipe screen functionality. hold
and press left mouse button to swipe with the mouse. If swipe
enabled in settings, no CTRL key press is required. It is a
swipe-screen function. Screen is not updated until the mouse
released. Note that near the celestial poles you swipe a
which turns around the poles.
Window version 3.4.0ß3_FPC
server. Work in progress. Intension is to continue
with the FPC version only.
0.0.0ß21, strech draw, ctrl-z function. Fast Bayer matrix
FITS image viewer
which can call PlateSolve2 and add the plate solution to the
FITS header. Version 0.0.0ß1
3.3.4d, Minor fix in measuring frame.
3.4.0ß1_FPC version with server to be controlled from APT. Download 3.4.0ß
Intension is to continue with the FPC version only.
Updated Esperanto and Catalan language files.
MS Windows version 3.3.4c, Linux version 3.3.4b_FPC.
Fixed the mouse position indication in cylindrical
, MS Windows
version 3.3.4b, Linux version 3.3.4a_FPC. Fixed a path
problem opening a FIT's file using the pull down menu.
updated Spanish language module, "Deepsky level 3" and
"Sharpless2, catalog of HII regions (emission nebulae).sup"
MS Windows version 3.3.4a. Linux version 3.3.4_FPC. Fixed
checkbox in object menu. Improved some night vision colors
& dark skies window. Updated deep sky database for
objects without H-alpha emissions.
MS Windows version 3.3.4. Updated
the Moon & dark skies window: 1) Added adjustable
the twilights , 2) astronomical twilight definition is
added date scrolling.
Added two new (small) supplements: Landolt UBVRI photometric
stars in the magnitude range 11,5-16,0 and Miles stars with
MS Windows version 3.3.3f, added to UCAC4 info the APASS B-V
for estimating star color and the calculated star temperature
version 3.3.3L_FPC (amd64 and i386) Fixed a major problem with
position detection (source code typo). Secondly a fix for the
application hanging if no internet connection available. For
version the Skyview download link should be changed from http
to make it working! In version 3.3.3L1 this is done
- MS Windows version 3.3.3e
version 3.3.3k_FPC (amd64 and i386)
midnight=24:00 hours as far as possible. I was not happy with
temporary 23:00 hours solution. The time input still
doesn't allow 24:00 hours /12:00 PM and will show midnight as
next day at 00:00 hours/12:00 AM. Since it is a standard
module mirroring the operating system time format it can't be
Fixed a problem with syntax check for supplements.
version 3.3.3j_FPC fixed some path problems for help file and
selecting FITS directory. Adapted some
windows for large font size. Issued Linux i386 version (32
- MS Windows version 3.3.3d3, fixed a font problem in Windows
version 3.3.3h_FPC repacked with correct permissions set for
English .ini files. The non-english files where not accessible
could solve this manually by following command line:
sudo chmod 666 /opt/hnsky/*.ini
New Catalan help
by Antoni Clavell and updated Esperanto
translation of the program by Ramon Perera.
Windows version 3.3.3d2, added some words to
Linux version 3.3.3h_FPC, fixed a problem with the grid in
mean equinox of date. Added some words for translation.
Windows version 3.3.3d, Linux version 3.3.3g_FPC, fixed
a problem that in rare case magnitude of stars was not given.
the Win10 Night light option to the night vision mode. Note
only work if you have the latest Win10 updates and it will
minutes to reach maximum red color shift. If switches off,
will take 10 minutes to restore the normal colors.
Linux version 3.3.3f_FPC, fixed in Settings menu the
dropdown list of non-English versions.
Linux version 3.3.3d_FPC adapted for new folder
Windows 3.3.3c, fixed a problem in the status as
introduced inversion 3.3.3b.
Linux version 3.3.3c_FPC, Major overhaul Linux version:
- Fixed a problem with the time menu
- Fixed unreliable zooming using rectangle.
- Removed night vision from menu.
- Fixed manual entry in Object and Animation menu.
- Fixed presentation of some Ok buttons
- Adjusted some window layouts.
- Removed INDI message during start.
- Closed deepsky circles since bug in FPC was fixed.
2017-5-4, Windows version 3.3.3b, added CTRL+double
mouse click for telescope pointing.
2017-5-3, Linux version 3.3.3b_FPC. Fixed some
path problems. Now released in a Debian package.
2017-4-29, Linux version 3.3.3a_FPC Fixed some problem
in the INDI
interface. Works now reliable for remote control
and with drivers like LX90, LX200, Celestron.
2017-4-16, very minor corrections in the help files.
2017-4-14, HNSKY version 3.3.3. Added access to
wide field DSS images from NAO
. This allows
large fields up to 6° similar as Skyview. Example:
2017-4-12, HNSKY version 3.3.2d and Linux version
3.3.2d_FPC, several minor corrections.
version 3.3.2c and Linux version 3.3.2c_FPC. Some minor
The Linux version is no longer ß. Will be identified with same
ending with FPC.
Two new features for supplement manipulation and one could be
be used to keep a logbook of observations :
Edit menu for a single supplement entry:
1) For convenience HNSKY provides and additional edit menu to
access a single supplement entry. This could be used to add a
log or an observation in the "type" field. You could
either use an existing supplement or add a new label at the
mouse position (home key). Rename an existing supplement
before you use it otherwise a new HNSKY version could
overwrite it if updated.
See in the online help file:
Import tool in the editor:
2) New option for creating a supplement from a text list of
objects. I made this for personal use. If I copy my HTML based
astro image web page and then paste it inside the editor, the
program will process and create a list of labels with their
corresponding position. All recognizable deep sky names will
be recorded once and remainder will be ignored. This helps me
personally to keep an updated record of deep sky objects
images taken. Any textual list of deep sky object will be
imported. Maybe useful for others.
2017-3-31, Introduced Spanish help file.
Excellent translation work by Roberto
2017-3-8, HNSKY Linux version 3.3ß42. Fixed a
problem with the map clock.
2017-3-7 and 8, Help file
, Roberto made very nice new style. Thanks.
Hope you like it.
2017-3-6, HNSKY version 3.3.1a/
3.3ß41 Updated the help file and non-English files.
2017-3-2, HNSKY version
3.3.1 Significant update:
- Added a modern date & time input and a monthly
calender. The calendar doesn't allow dates beyond year 1752
and 9999 so there is still an traditional input. The
midnight button is now setting 23:00 hours. since 24:00 hours
is not allowed in the current setup.
- Automatic daylight saving adjustment for time zones
in the setting menu
PST/PDT, MST/MDT, CST/CDT, EST/EDT
Europe: GMT/BST CET/CEST
The daylight saving is based on the current valid rules and
works from 1977 (arbitrary)
20.000+. No effort is made to follow historical changes
using a so called Time Zone Database. Using the function
buttons F3, F4, F5, F6 it is possible to step through the
daylight saving dates changes.
- Uses the decimal separator dot or comma as specified in your
(Windows) system settings . However the dot as separator is
Both the daylight saving and date & time menu took
significant effort to implement. Please review and report
any bug or problem.
Some work for the translation files is still required.
2017-2-25, HNSKY version 3.3.0f, added the ASCOM telescope
driver park,/unpark, setpark, home and tracking functions
2017-2-23, HNSKY version 3.3.0e/3.3ß40, included
comets in the min
mode of the OBJECT menu.
2017-2-22, HNSKY version 3.3.0d, added a help link for Jet
Propulsion Laboratory Development Ephemeris
version 3.3.0c/3.3ß39, Changed open cluster contour to dotted
line to follow the convention.
2017-2-20, HNSKY version 3.3.0b/3.3ß38, Added comet and
minor planet velocity to statusbar message. Unit is
arcsec/hour sky motion. Could be used in PHD2 for
2017-2-18, Overhauled the deep sky
database. Added some objects from the old SAC72. Replaced all
published brightness values by calculated values. Now
more consistent brightness values.
3.0.0/3.3ß37, added α, δ symbols for RA
and DEC If you don;t like this select English languge in
settings menu. Updated non English ini files. Updated the help
2017-2-15, HNSKY version 3.3.0, (3.3ß37 Linux),
Added support for Jet Propulsion Laboratory Development
Ephemeris (like DE430, DE431). Covering years –13,000
to +16,999 . The Jet Propulsion
Laboratory Development Ephemeris will bring high
accuracy for occultations. Overhauled
planet unit. Added apparent position. Updated time
menu and added Julian day input.
3.2.7f/3.3ß36, fixed a problem in IAU designation. Fixed some
initialization problems after closing polar view window.
Very minor update in the
Deepsky database 3.
3.2.7d/3.3ß34, improvement in star_index. Removed
some PGC and vdB doubles in the deepsky database. The
current deepsky database is one of the finest error free
version 3.2.7c, fixed set time menu alignment for higher DPI
HNSKY version 3.2.7b /3.3ß34 , added tool bar buttons to the
"set_time" menu. Fixed a small problem in the drawing mode.
Updated Deepsky level 3.hnd.. Added VDB supplement.
HNSKY version 3.2.7a /3.3ß33 , changed the north/south line in
dotted line for meridian flip and other reasons.
version 3.2.7 /3.3ß32 , all numbers on the altitude grid and
horizon have now orientation zenith. This to assist you
with orientation and it looks nicer.
version 3.2.6.e, made all extensions in editor down case.
Added a Kepler K2 campaign supplement as demonstrator of the
supplement possibilities. Moon occultations in Kepler field:
HNSKY version 3.2.6.d & Linux 3.3ß31d, overhauled the
bright star (text) find routine.
3.2.6b & Linux 3.3ß31b, introduced the 290-9 and 290-5
star database format. Reduced file size again with 10%
and 17%. Each star in the Gaia or U16 databases takes
around 5 bytes disk space. These database versions
are compacter but there is no gain in speed. You could keep
the older databases for time being. For technical
details see the help file
. Made the star plotting
routine a little faster. Disabled the mouse find function for
disabled deep sky database.
HNSKY version 3.2.5a & Linux 3.3ß30 and new compacter
format for the star databases without quality loss. TYC and
TUC record size goes from 11 to 10 byte saving 9% space.
U16 and G17 go from 7 to 6 bytes saving 14% space. Works only
with very latest HNSKY versions 3.2.5a en 3.3ß30. These
database versions are compacter but there is no gain in speed.
You could keep the old databases. For technical details see
native HNSKY database up to magnitude 17
164 million Gaia stars. Note that Gaia DR1 is missing some
stars so is less suitable for star maps. HNSKY version
3.2.4b or Linux 3.3ß28 required, just released today. Unpack
in the program directory, typically c:\program files\hnsky
version 3.2.4b & Linux 3.3ß28. For above Gaia 290 star
, issued a
new version of the TUC star database up to magnitude 15.
Contains 7 % more stars due to other magnitude selection.
version 3.2.4a & Linux 3.3ß26. Fixed a problem in
reading U16 star database type 290 with 7 byte record
HNSKY database up to magnitude 16
contains 113 million
stars. A compilation of UCAC4 and Tycho-2. (RAR file of 437
mbytes). HNSKY version 3.2.4.001 or Linux 3.3ß25 required.
No Tycho-2 or UCAC4 indentifiers are available due
to 7 byte record size. Instead an IAU style designation
based on the position is used.
HNSKY version 3.2.4 & Linux 3.3ß25.
Introduced 7 byte record size in 290 database.
HNSKY version 3.2.3b, Gaia DR1 support using Vizier online
database up to magnitude 20. Gaia proper motion implemented.
version 3.2.3a, fixed an stream error if switching off
the online database. Adapted plotting range of the TUC
database to magnitude 15.
HNSKY database up to magnitude 15
containing 36 million
stars made form TYCHO-2 and UCAC4. Compressed in a RAR archive
the size is 192 mbytes. It will only work with the latest
version 3.2.3. of HNSKY since it is in the "290" format.
Abbreviation in the program as TUC
2016-08-06, HNSKY version 3.2.3
with new .290 star file format. Installer will
replace the d32 files with .290 files! This
star database format will be faster and allow larger