Astro Photo Tool

When taking images of the night sky a common requirement is to avoid or minimise star trails. The calculator provided here gives a rule-of-thumb as to the maximum exposure time that should be used in order to minimise the effect of star trails.

It also provides the user with accurate cloud coverage data for the next 48 hours to find the perfect time to photograph the beauty of the cosmos.

Can also be used by Astronomers to set up their telescopes without the fear of clouds.