Society member Vince Sellars captured this superb image of the Globular Cluster M3 (NGC 5272) in the constellation of Canes Venatici on 24/03/2015. At a distance of roughly 34,000 light years, it has an unusually large population of variable stars, and is one of the finest globular clusters to observe in the northern hemisphere.
Vince stacked his best 44 images using Deep Sky Stacker. Each image was a 30 second exposure at ISO800 using a Canon EOS 60D DSLR camera at prime focus on a SkyWatcher 200 newtonian reflector telescope.
- Planets – a few facts