Features
Realistic simulation of the sky, sunrise and sunset
Default catalogue of over 600,000 stars
Downloadable additional catalogues for up to 210 million stars
Catalog data for all New General Catalogue (NGC) objects
Images of almost all Messier objects and the Milky Way
Artistic illustrations for all 88 modern constellations
More than a dozen different cultures with their constellations
Solar and lunar eclipse simulation
Photorealistic landscapes (more are available on the website)
Scripting support with ECMAScript (a few demo scripts are included)
Extendable with plug-ins: 8 plug-ins installed by default, including:
artificial satellites plug-in (updated from an on-line TLE database)
ocular simulation plug-in (shows how objects look like in a given ocular)
Solar System editor plug-in (imports comet and asteroid data from the MPC)
telescope control plug-in (Meade LX200 and Celestron NexStar compatible)