Planetarium which is "Telescope controllable". Your screen becomes a night sky with the window of beautiful, dark red. 18,000,000 stars (After distributing CD-ROM) and 10,000 nebula and clusters are in real time displayed. You can go in the past and the future when you click the panel clock. If you see full automatic "Astronomical calendar", you obviously know when an astronomical show (moon age, meteoric swarm, solar eclipse, lunar eclipse, occultation, and e.t.c) occurs. If the telescope is connected with your PC, Your telescope will be navigated to the heavenly body which wants to see. You can obtain Star Atlas of the same quality as the marketed Star Atlas from your printer.

Version 4.1 features changes in user interface, adds some new functionalities, and fixes minor bugs.