Messier 46
Open Cluster, Canis Major
Click image for 1500x1000 view

ASA N16 f3.6
AP 1200GTO
SBIG STL-11000
M
SBIG STL-Internal
November 2008. Cave Creek Canyon Observatory, Arizona Sky Village
Equipment:

Telescope:
Mount:
Camera:
Guider:
Filters:

- Luminance  (Astrodon) 15x1 mins          = 15 mins
- Red
(Astrodon)               15x1 mins          = 15 mins
- Green
(Astrodon)           15x1 mins          = 15 mins
- Blue
(Astrodon)              15x1 mins          = 15 mins
 
Total Exposure Time =  1h 00m
Details:
Data Imaged remotely over 2 nights (Nov 29 & 30, 2008). This cluster is noteworthy because it contains a bright Planetary Nebula, NGC 2438. This FOV also contains another Planetary Nebula, PK 231+4.1, faintly visible at the lower-center. Enlargements of both are available via the links below.
2008, David A. Churchill
Links:

The ASA N16 Telescope              NGC 2438             PK 231+4.1