NGC 957 (Lund 84, Cr 28) Open Cluster in Perseus

Located at: RA 02 hours 33 minutes 20 seconds, Dec +57 degrees 34 minutes 12 seconds

Size: 11' (10') Magnitude: 7.6 Class: III 2 m

North is up

West to the right

Telescope:

 8" f5 Newtonian reflector

Camera:

 ST-8XME, self-guided, binned 1x1, temp -25c, camera control MaxIm DL 4.56

Image:

Lumicon Deep Sky filter, 210 minutes (21 x 10 minute subs), 12/2/2007

Processing:

CCDStack 1.3, Photoshop 7.0

Location:

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

Notes:

This image replaces the unfiltered 60 minute Track & Accumulate image from 12/06/2005.

According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of this open cluster is 10 arc minutes.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 957

NGC 0957 = Cr 28 = OCL-362 = Lund 84
02 33 19 +57 34.2
V = 7.6;  Size 11

17.5": moderately rich cluster, ~9'x4' in size and oriented ~E-W.  Includes a 
mag 8 star on the SW side and a mag 8/10 pair on the SE end [23" separation].  
About three dozen stars are fairly evenly distributed within this elongated 
cluster.  There are few faint close double stars along the NE side and the 
bright double has a couple of much fainter companions.  A mag 7.5 star is off 
the W side of the cluster but appears completely detached.

8": 30 stars in cluster, fairly large, moderately rich, elongated ~E-W, 
unresolved haze. A bright wide double star mag 8/10 at 23" is on the SE edge.  
Bracketed by fairly bright stars to the E and W.  Located 1? NE of the Double 
Cluster.

- by Steve Gottlieb