NGC 654 (Cr 18) Open Cluster in Cassiopeia

Located at: RA 01 hours 44 minutes 00 seconds, Dec +61 degrees 53 minutes 00 seconds

Size: 5.0' (6.0') Magnitude: 6.5 Class: II 2 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), 11/15/2007

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 6.0 arc minutes.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 654

NGC 0654 = Cr 18 = Mel 9 = OCL-330
01 43 59 +61 53.0
V = 6.5;  Size 5

13.1": 35 stars, rich, includes several doubles.  Located just NW of mag 7.3 SAO 
11950.

8": rich in faint stars including doubles.  A mag 7 star is at the SE edge.

- by Steve Gottlieb