Herschel 353
NGC 6645

Object Type Open Cluster
Constellation Sagittarius
Magnitude 8.5
Size 15.0' x 15.0'


Combination of 15, 1 minute images unfiltered.
SBIG STL-1001E CCD. 20" f/6.8 Dall-Kirkham cassegrain telescope at prime focus.

Number 353 in the Herschel 400 list is NGC 6645. Although it is a fairly large and moderately bright cluster, it is almost lost amongst the rich starfields of the Sagittarius Milky Way.

Visual Observation Notes:- NGC 6645.

Large scattered cluster of moderately bright stars. Rich background of faint stars.
18" f/5 newtonian. 16mm nagler eyepiece. 143x.
Sky View observatory. Zenith limiting magnitude 6.7.