Welcome to Clear Sky Institute, Inc.
Serious Astronomical Systems and Tools
Full-featured astronomy application for all
A classic yet comprehensive 24x80 screen-oriented
ephemeris program with that retro-look.
Personal Sky Chart
Hold the universe to Mag 15 in your hand with your
New Version 1.3 controls your LX200
CSI Inc offers complete observatory control software and consulting
For more information, contact us at info@ClearSkyInstitute.com
Launch the HP-35