Herschel 371
NGC 6939

Object Type Open Cluster
Constellation Cepheus
Magnitude 7.8
Size 10.0' x 10.0'


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

Number 371 in the Herschel 400 list is NGC 6939. NGC 6939 is a fairly large and rich cluster, however the stars are almost all below 10th magnitude, so a telescope is required for a good view.

Visual Observation Notes:- NGC 6939.

Moderately large cluster. Rich in fainter stars.
18" f/5 newtonian. 16mm nagler eyepiece. 143x.
Sky View observatory. Zenith limiting magnitude 6.7.