Celestial hemisphere:  Southern  ·  Constellation: Puppis (Pup)  ·  Contains:  140 Pup  ·  M 46  ·  NGC 2437  ·  NGC 2438
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M46 Open Cluster (LRGB) incl PN NGC2438, Geof Lewis
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M46 Open Cluster (LRGB) incl PN NGC2438

Getting plate-solving status, please wait...
M46 Open Cluster (LRGB) incl PN NGC2438, Geof Lewis
Powered byPixInsight

M46 Open Cluster (LRGB) incl PN NGC2438

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Description

Another low altitude open cluster, but I learnt a bit from my efforts at M41, so this time I did manage to collect all LRGB data. This one includes the planetary nebula NGC2438, which has a line of sight rather than real association with the cluster. M46 is approx 5,500 Ly away, whereas the PN is about half that distance at about 3,000 Ly (source Wikipedia).

Following a post by Marc Richard with his image of this cluster, I learned that I also have PN Minkowski 1-18 in the frame 😀. It can be seen to the left of the bright star midway between the left hand edge of the frame and PN2438, best seen at full resolution as a faint reddish round blob.

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M46 Open Cluster (LRGB) incl PN NGC2438, Geof Lewis