Home

Aciqra (uh-SEE-kruh) is a free and open source virtual planetarium and sky mapping program which tracks celestial bodies including planets, deep sky objects and stars to an accuracy of a fraction of a degree for thousands of years into both the future and the past. Read more about Aciqra...

• Tycho-2 and Hipparcos star catalogs w/ 2.5 million stars
• Full NGC and IC catalogs w/ 13000 deep space objects
• Semi-realistic rendering of comets
• Interface designed for efficiency
• Correction for atmospheric refraction
• Night vision mode -- turns display red for use at night
• Correction for nutation and precession
• Calculate proper motions for stars
• Selecting objects to show details
• Constellation boundaries
• Save current view as an image
• Angle indicator (simulates views from an eyepiece)
• Comets and asteroids tracking
• Earth's umbra and penumbra for lunar eclipse simulations
• New release finder and downloader
• Search for objects to quickly locate objects of interest