M3 is a well resolved magnitude 6.4 globular cluster in Canes Venatici with stars fainter than magnitude 16 in this image. It is visually an easy target with binoculars and quite impressive through a 5 inch telescope at medium power. The dense star cluster is populated by red super giant stars and bluish variable stars.
Date Imaged :
May 11, 2009
Astrophysics 5" f/8 Starfire
Astrodon LRGB 6,3,3,3 x 1min
Stardust Observatory, Baguio, Philippines