M 103 (NGC 581, Lund 46, Cr 14) Open Cluster in Cassiopea

Located at: RA 01 hours 33 minutes 22 seconds, Dec +60 degrees 39 minutes 30 seconds

Size: 6.0' Magnitude: 7.4 Class: II 2 m

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), 10/30/2007

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 a 61 minute unfiltered Track and Accumulate image from 11/22/2005  ... seeing no better than 3-4 arc seconds, taken at beginning of off-shore wind event (Santa Ana's).

From the the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 581

NGC 0581 = M103 = Cr 14
01 33 22 +60 39.5
V = 7.4;  Size 6

13.1": 50-60 stars in cluster, fairly rich.  Includes several bright stars in a 
distinctive triangular wedge shape (mag 7.3 SAO 11822, mag 8.9 SAO 11824, mag 
8.3 SAO 11826 and mag 8.3 SAO 11829) with a bright orange star E of center.

- by Steve Gottlieb