Deep Sky
M21
NGC6531


Constellation: Ssgittarius
This is one of the younger open clusters, as you can tell by the fire-blue, some 4.6 million years (considerably younger than the dinosaurs).  It contains some 57 stars some bright, mag 6.5, but mostly small and dim guys. Not one of the M series that you can see with your eyes, but binoculars, sure, why not.

10 images
10 sec
date: 9-15-12