Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.

It is being used in planetarium projectors. Just set your coordinates and go.

Features:
- sky
· default catalogue of over 600,000 stars
· extra catalogues with more than 210 million stars
· asterisms and illustrations of the constellations
· constellations for twelve different cultures
· images of nebulae (full Messier catalogue)
· realistic Milky Way
· very realistic atmosphere, sunrise and sunset
· the planets and their satellites

- interface
· a powerful zoom
· time control
· multilingual interface
· fisheye projection for planetarium domes
· spheric mirror projection for your own low-cost dome
· all new graphical interface and extensive keyboard control
· telescope control

- visualisation
· equatorial and azimuthal grids
· star twinkling
· shooting stars
· eclipse simulation
· skinnable landscapes, now with spheric panorama projection
· customisability
· plugin system adding artifical satellites, ocular simulation, telescrope configuration and more
· add your own deep sky objects, landscapes, constellation images, scripts.

Download: Stellarium 0.10.4 (43.6 MB)  | Screenshots | Homepage