Home of Thorsten Lange

VARSTARS

• Input and data base for own observations
• Including observations in formats AFOEV and VSNET, AAVSO *.RAW and *.SUM and of free defined text formats
• Lightcurves: view, print and export (e.g. GIF format)
  different colors/forms for observer groups and single observers
• Printing and saving of monthly reports for BAV, AAVSO and AFOEV in the correct data formats. Printing into AAVSO forms.
• Chart viewer for VSNET charts (*.cht)
• Observer codes and observer database, morer than 600 observers worldwide included
• Support of the new GCVS-format 2001 (file iii.dat)
• Display only observations of one observer groups (e.g. AAVSO and BAV)
• Resulting licghtcurve with optional phase mapping and mirroring of the observations at phase 0.5
• English language for menues and dialogs
• Type test on amplitude and period.
• Can be used as online lightcurve generator, see implementation at http://www.bav-astro.de/datenbank/lkg.html
• Screenshots of VARSTARS
• Recent version (2005/04/20) for Linux (365 kb as tar.gz-file): The archive includes the complete source code and some examples. Read the manual (english, but incomplete) or german manual (complete).
  You will need the following libraries, which should be included in most Linux systems:
  • XForms: libforms.so.0.88
  • Standard: libX11.so.6, libm.so.5, libc.so.5
  
  For the installation please copy the files varstar.tar.gz and install_vs in your home directory and execute install_vs. This creates a subdirectory varstar and extract all files. To compile the software, please execute the command make total in this directory.
• MS DOS old program version (1997/08/07) as 87 kb zip-file
• Programmer:

Calculation of Ephemerids

• Operating systems: Linux and Windows (95 and newer)
• Data in text format
• Parameter for timezone, number of days and name of output file:
  kurzper -z=1 -d=5 -o=test.htm
• Output in a html file:
• kurzper.zip (55 kb as zip-file)
• Programmer:

EPHEM

• Operating system: DOS
• The program is designed to calculate time of max/min for a variable which ephemeris is known.
• ephem.exe
• Programmer: Gianluca Masi

Analysis of Periods

• "The Final Frontier of Period Analysis Software"
• Analysis of periods of variable stars: lots of algorithms and plots
• Programmer: Tonny Vanmunster (?)
• Operating system: Windows
• Download: www.peranso.com

• "Analisis de variabilidad Estelar" ("Stellar Varibility Analysis")
• This software plot light curve, calculate periodicity with several methodes, calculate mininum and maximum points; plots phase diagrams, etc, etc.
• Operating system: Windows 95/98, a spanish software.
• Download in the G.E.A. web page: http://www.gea.cesca.es

• Periodicity calculation
• Download: Lancelot

VAROBS

• Variables Star Observer
• A program to help you to plan and log variable stars observations.
• Ephemeris by constellation for 16 000 stars from the GCVS included.
• Operating system: Windows 95/98/NT
• varobs

VSSPlot 2.0(beta)

• Operating system: MS DOS
• MS DOS
• Programmer: Fraser Farrell

Minima 2.5

• Calculation of minima of eclipsing binaries based on six different algorithms.
• Download: http://members.shaw.ca/bob.nelson/software1.htm
• Programmer: Bob Nelson

Other Software

• A list of computer programs is available at the VSNET
• A large link list for different astronomy software and different operation systems is available here .
• Converting data formats (e.g. AAVSO --> VSNET), and an observation input program?
• MuniDOS DOS based apperture photometry package, binaries for various Unix/Linux are available
• MISAO - PIXY System 2: Multitudinous Image-based Sky-survey by Accumulative Observations
• OpenGL CV paints animated OpenGL images of cataclysmic variable stars