Combination of 15, 1 minute images unfiltered.
SBIG STL-1001E CCD. 20" f/6.8 Dall-Kirkham cassegrain telescope at prime focus.
| Object Type | Open Cluster |
| Constellation | Casseopia |
| Magnitude | 8.2 |
| Size | 3.0' x 3.0' |
Number 25 in the Herschel 400 list, NGC 637, a small and compact open cluster of moderately bright stars in Casseopia.