Discover links and resources for astronomy software for amateur and professional astronomers and for people interested in astronomy, stargazing and space.

Lunar and solar periodicity formulas, definitions, time formulas, notation, astronomical constants with computer code for a programmable HP 48 by James Q. Jacobs.

Links to the BASIC programs that appeared in Sky and Telescope, to shareware/freeware astronomy related software and to vendors of astronomy software.

Review of the solar system simulator (by Spacetech) for RISC OS workstations.

Free and open java based astronomical logging tool. It stores data in an XML format called COMAST, a tool which provides a free schema definition for all kinds of astronomical observations.

Interactive program for computing synthetic lightcurves and generating animated views and best-fit models of eclipsing binary stars. [Open source - Linux/Unix]

Windows software for converting dates in various lunar and other calendars and for finding lunar phases and eclipses of various kinds.

Astronomical software on Linux.

Astronomical software precompiled for the Linux operating system. Applications include general purpose image and signal processing tools, as well as algorithms in use at observatories and universities worldwide. Facilities for processing the data products of the major space-based instruments are also included. [Commercial - Linux]

[commercial, demo available -- Win95/98/NT] Includes calendars required by historians of astronomy and general historians. Many details are provided for Indian and Jewish calendars. There is also a display of positions of the Sun, Moon and planets, effectively replacing Tuckerman's tables. A horoscope display, and details of lunar visibility, are calculated from modern parameters.

A stellar evolution simulator designed for astronomy education.

Observation planning software for astronomers. Includes telescope control, logging, and charting.[Commercial - Windows]

Provides a library of functions and routines written in the Interactive Data Language (IDL). Developed mainly for use in astronomy, the library also supplies general scientific and programming applications.

Freeware allowing one to draw charts according to the data of 15 catalogs of stars and nebulae, as well as the position of planets, asteroids, and comets. Available in English and is translated in 8 other languages.

News, reviews, articles, forums and downloads of astronomy related programs for various platforms.

Promoting the use of open scriptable tools for amateur and educational astronomy.

Advanced software for astrometry, photometry, robotic observations. Huge database of images and catalogs. Works with MaximDL and ASCOM. Free downloads.

Features the following programs: an ephemeris calculator, a collection of astronomical data in electronic form, Planet Orbits, C88, and Planetary, Lunar, and Stellar Visibility.