NGC 663 (Lund 55, Cr 20) Open Cluster in Cassiopeia

Located at: RA 01 hours 46 minutes 17 seconds, Dec +61 degrees 13 minutes 06 seconds

Size: 16' (15') Magnitude: 7.1 Class: II 3 r

North is up

West to the right

Telescope:

 8" f5 Newtonian reflector

Camera:

  ST-8XME, self-guided, binned 1x1, temp -15c, camera control MaxIm DL 4.56

Image:

Lumicon Deep Sky filter, 180 minutes (18 x 10 minute subs), 11/14/2007

Processing:

CCDStack 1.3, Photoshop 7.0

Location:

 Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)

Notes: According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of this open cluster is 15.0 arc minutes.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 663

NGC 0663 = Cr 20 = Mel 11 = OCL-333
01 46 16 +61 13.1
V = 7.1;  Size 16

13.1": ~75 stars, fairly large, rich, many doubles including ?153 = 9.7/10.9 at 
8" and ?152 = 9.4/10.9 at 9" and ?151 = 10.7/11.2 at 7".

- by Steve Gottlieb