to the semi professional free planetarium program
HNSKY for Windows intended for amateur astronomers. The program
your telescope via the ASCOM interface, has a comprehensive up to date
database with 30.000 object and detailed descriptions. A star database
millions of stars and blends in accurately online and internal Deep Sky
images. Allows online update of the asteroid and comet databases. Can
search in professional astronomical databases. Is provided with menu's
21 languages and is totally free without any advertisement or
|Planetarium program HNSKY version 3.0.0▀b5d (56 MB, version 2015-3-5)
Hallo northern sky" or HNSKY is a full feature planetarium program for Windows. Free with 30.000 deepsky objects and the TYCHO2+ 2.5 million star database up to magnitude 12. After downloading the GSC 1.2 or the USNO UCAC4 it displays stars up to magnitude 16. The Sun, Moon, the planets and their major moons, bright asteroids and comets are all displayed with surface features. It comes with hundreds of DSS deepsky images which will blend in at the right size and orientation. It has an integrated deepsky help file and 21 non-English menus.
In can control almost any telescope using the ASCOM interface program.
Downloading of additional DSS images via the internet is fully integrated. Just select an area and select download. After a few second the DSS image will pop in HNSKY at the correct sizeand orientation.
The comet or asteroid database can be updated online with just one click.
Online database search for objects in the selected area.
Numerical integration for asteroids to achieve highest accuracy positions years in the future or past. The error is less then 1" after 10 years !!! So a asteroid file from 10 years ago will after numerical integration be within 1" accurate!!
small upgrade package version 3.0.0▀5d , extract and overwrite these files in the HNSKY directory.
|Older version||Planetarium program HNSKY version 2.4.1 (56 MB v2.4.1, version 2014-7-14)|
|Asteroids/Comets updates||Download and import the huge MPCORB.DAT file. For more asteroids you have to download and import this original Minor Planet Center file containing orbital element of about 360.000 numbered asteroids.|
|Additional stars databases||UCAC4: You can download the 113 milion stars, 8.5 Gbytes large USNO UCAC4 from ftp://cdsarc.u-strasbg.fr/cats/I/322A/UCAC4/ HNSKY can access this catalog directly. Download Z001 to Z900 from the U4b directory and add to the same directory file u4index.unf from U4i. This is the only catalog where HNSKY will use proper motion for maximum accuracy. See HNSKY UCAC screenshots.|
1.2 (catalog 254) of 15 million stars to about
magnitude 15 is available at CDS in the compact binary format
The uncompressed GSC 1.1 or GSC_ACT can compressed by the the EXPORT program to the same compact binary format (total 303 MB) as used for the GSC 1.2.
|Hipparcus star database, Hipparcos 118.000 stars file for reference purposes only. One zip file 1.2 MB containing one DAT file. Version 2000-8-9.|
|Obsolete TYCHO-1 star databases, more then 1 million stars, total size 10 MB, 4 Zip files containing 32 x D32 files, version 2000-8-10.|
|Constellations in form of a supplement, Bright Quasars and BL Lacertae Objects.sup, Coordinates from 110 extra solar Planets.sup|
|HyperLeda_980000_galaxies supplement Dated 2015-1-5 (10 MB) demo image using 65 mm telescope or 71000 Galaxies supplement based on Leda data Dated 2002-6-11 (15 MB)|
|World map supplement: World map supplement version 3.0 dated 2000-10-22. World map and 2700 cities with there location and relative brightness. Scale 1 : 5.000.000. See screen shot of version 2.0. Included a conversion program to convert coastlines to a supplement.|
|GCVS 4.1 variable star supplement. Complete 37382 star version. In this supplement the GCVS is displayed as labels so you can easily cross check with Tycho or UCAC2. To get Tycho star info switch off the supplement. (The smaller 7800 star version is included to the basic package)|
|Obsolete using the Tycho 2+ database: Star supplement Tycho-2: Supplement (star) version 00-3-24 containing the 6395 in Tycho-2 omitted stars as taken from TYCHO-1-main and Tycho reference. Contains HNS_TYC2.SUP. These stars are already included in the tycho2+ star database.|
|Additional FITS images||Extra large Mars map (Color
1000x500 pixels) , large
Mercury maps (1440x720 pixels)
based on Mariner 10, SVTS and large
Jupiter maps (Color 600x300 and 1200x450
pixels) . Use the large maps only if you have a fast
computer or some patience. The planetary FITS files should be placed in
your FITS directory.
45 hand made drawings/sketches (880 Kbytes) of Bill Ferris, Todd Nowlan and Rainer T÷pler as FITS files. These can blended inside the map. They should be put in an other directory as the Realsky images otherwise they are blend with the Realsky images.
|Other languages||non-English help files and language modules. If you want create a new language module start modifying the English one .|
|CD covers||Some designs by volunteers: or or or or|
|Conversion tools||Conversion programs/tools Tools for converting GSC 1.1 star database from FITS format to the compact binary format as GSC 1.2. (EXPORT.EXE program) This will compress GSC 1.1 or GSC ACT from 2 CD's to 303 MB only !! EXPORT.EXE (v 2001) will also export the HNSKY databases to text files (ASCII). Utilities to export GSC 1.1/ACT and USNO A2 to TXT/ASCII files. And finally for experts some DOS programs to create new star databases for the HNSKY program. Conversion program and source code for Hyperleda catalog.|
|Realsky and DSS image viewer using HNSKY DDE link (HNS_REAL) Manual or DDE controlled Realsky image viewer. Click on an object and get the realsky image (you have to own the Realsky or DSS CD's). Click on the Realsky image and to center to get cross at HNSKY at the same place. Version 2.0.0b, Dated 2015-1-9. Here are the instructions and screen shot demo's If your FITS directory in HNSKY is set to the HNS_REAL directory, you will get every result blended in the next screen refresh. HNS_REAL can also be used in batch programs to create several images. Complete with Delphi and C source. Can also batch wise convert FITS to BMP. An other possibility is to control HNS_REAL from the provided Excel table. Contains GETDSS source code version 1.1plus dated 11 june 2013. See also www.projectpluto.com/get_dss.htm|
|HNS_FITS version 1.4.0 dated 2003-9-19. Utility program to create FITS files from BMP files with the correct WCS header by entering the position of two reference stars. Screen shot and describtion. This is a great tools to blend your own pictures inside the HNSKY sky map. With three added example files.|
help file in CHM format as standalone file. HNSKY can call
only the HNS_DEEP.HLP
The following Windows program ORB_DEB is a simple windows program which calculates the orbital elements of a minor planet based on three observations/positions using the Gauss method: Download ORB_DET.ZIP version 1.01.
Here the standard ASCII input file for my HNSKY help file (version 2013) including the programs to compile it such as the free RTFGEN program . If you can correct my English or the Help file, send a correction to .
Here are some Pascal routines as used inside the HNSKY program. If you have any suggestion to improve them, please let me know: Pascal source code for some astronomical routines and constellation arrays as used in HNSKY program.
Questions, suggestions regarding the HNSKY program you could email directly to me (in English, Dutch or German) or better post them in the Yahoo group HNSKY: