M 67 (NGC 2682, Lund 490) Open Cluster in Cancer

Located at: RA 08 hours 51 minutes 24 seconds, Dec +11 degrees 49 minutes 00 seconds

Size: 29' (25') Magnitude: 6.9 Class: II 3 r

North is up

West to the right

Telescope:

 14.5" f5 Newtonian reflector

Camera:

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

Image:

Lumicon Red filter, 270 minutes (27 x 10 minute subs), 04/7/2015; seeing 3.0-3.9 FWHM per CCDStack

Processing:

CCDStack 2.89.5560.25580, Photoshop CS5.1

Location:

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

Notes: Still searching for one night images that are away from the full moon, as next few days are predicted to be cloudy. See the 8" image.

According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of this open cluster is 25 arc minutes.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 2682

NGC 2682 = M67 = Cr 204
08 51.4 +11 49
V = 6.9;  Size 30

17.5": at 140x about 200 stars mag 10-14 in a 15' diameter.  Includes several 
rich subgroups including one on the S edge near three brighter mag 10 stars.  
The brightest star mag 7.8 SAO 98178 is just off the NE edge. M67 is a well-
known old open cluster.

13" (12/24/84): about 100 stars mag 10-15 in 15' diameter, very rich and 
impressive cluster.

13" (3/24/84): beautiful at 88x with over 75 stars resolved at this 
magnification.

- by Steve Gottlieb