Open star cluster M21

UA 16-inch image of Messier 21

The bright but very sparse star cluster Messier 21 in Sagittarius, shown in an R-band CCD image obtained with the UA 16-inch telescope. The field of view shown is 17 arcminutes wide. With a little imagination, you can see a sort of diamon ring arrangement of the bright stars.

Messier gallery | Image gallery | UA Astronomy | Bill Keel's home page
Last changes: 7/2006      © 2006