NGC 457 (Lund 43, Cr 12) Open Cluster in Cassiopeia

Located at: RA 01 hours 19 minutes 33 seconds, Dec +58 degrees 17 minutes 24 seconds

Size: 13' (20') Magnitude: 6.4 Class: II 3 r

North is up

West to the right

Telescope:

8" f5 Newtonian reflector

Camera:

 ST-8XME, self-guided, binned 1x1, temp -20c, camera control MaxIm DL 4.56

Image:

Lumicon Red filter, 280 minutes (28 x 10 minute subs), 10/12/2008; seeing 3.2-4.3 FWHM per CCDStack

Processing:

CCDStack 1.3.7, 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 20 arc minutes.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 457

NGC 0457 = Cr 12 = Mel 7 = OCL-321
01 19 33 +58 17.5
V = 6.4;  Size 13

17.5" (9/19/87): ~150 stars in a beautiful cluster including mag 5 Phi 1 and mag 
7 Phi 2 Cassiopeiae.  Includes many mag 14-15 stars.

8" (1/1/84): ~75 stars in cluster.

6: striking bird-shape with two prominent "arms".  One of my favorite objects in 
this scope at 36x.

- by Steve Gottlieb