Stacking program, astrometric (plate) solver, fits file viewer
A planetarium software that shows a 3D simulation of the night sky
Data Analysis, Simulations and Visualization on the Sphere
Astronomy CCD capture software
Satellite tracking software
All-in-one Astrophotography Software Works on multi-OperatingSystem
Hallo Northern Sky planetarium program
Routines for wavefront propagation in IDL, Matlab, and Python
Navigational Algorithms - Marine navigation
Night Vision is a "planetarium" program written in Java
Earth orbits and satellite coverage display in 3D on your laptop.
Fortran library to compute positions of celestial bodies
Virtual Planetarium and other Astronomical Calculation Routines
General data-reduction tool for fiber-fed integral-field spectrographs
Command-line tools for astronomy and astrophysics
ProStack - a platform for image processing and analysis
DIY project to build a cover, flat panel or combo flip-flat panel
Build your own GPS unit