M 46 (NGC 2437) Open Cluster in Puppis

Located at: RA 07 hours 41 minutes 47 seconds, Dec -14 degrees 48 minutes 36 seconds

Size: 27'; Magnitude: 6.1; Class: II 2 r

Note: The Planetary Nebula NGC 2438 is located in the north/central part of the cluster, and is not associated with it:

Size: 64"; Magnitude: 10.1 photographic; Class: 4+2

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 Red filter, 540 minutes  (54 x 10 minute subs) 3/11/12/14/2010; seeing 2.2-4.7 FWHM per CCDStack

Processing:

CCDStack 1.6.1, Photoshop 7.0

Location:

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

Notes:

 This is a re-shoot of one of my last Track & Accumulate images from 2006. Seeing was much better than during the recent M 47 image, but I did not get all the data I wanted because of weather... Finished up on the 14th, however, during the last few images the seeing deteriorated quite a bit