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PN M2-48 One you've likely never seen before

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#1 Rick J

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Posted 26 May 2013 - 03:17 PM

M2-48/Hen 2-449/PK 062-00 1/PN G062.4-00.2 among other designations is a small planetary nebula in Vulpecula near the far more famous M27. I found two very different distance estimates for it, one says 1100 +/- 300 Parsecs (3600 +/- 1000 light-years) and the other says 7160 parsecs (23,300 light-years). Now that's a discrepancy! Interestingly the first paper listed many planetary distances from several sources including the source for the 7160 estimate but left that entry blank! Apparently they didn't trust it enough to include. So for now its distance is "still to be determined" as best as I can tell.

More of a mystery is why I imaged it in the first place. I normally keep good notes about this but drew a complete blank on this one. I can't even find it in my to-do list yet I took it anyway. I also come up blank for any amateur images of it on the net. I did file it under one of its catalog names so knew what I was taking. The why is totally lost however. So this is a short entry.

I did find a somewhat readable paper on it by some astronomers who knew why they looked into it.
http://cds.aanda.org...2/23/aa2425.pdf

14" LX200R @ f/10, L=4x10' RGB=2x10', STL-11000XM, Paramount ME

Full frame at 1" per pixel
http://www.spacebant...ntid=4619&stc=1

Attached cropped image at 0.67" per pixel.

Rick

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#2 David Pavlich

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Posted 26 May 2013 - 04:48 PM

Heck, Rick...about half the stuff you image I've not seen! :grin: Nice work!

David

#3 Jim Thommes

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Posted 26 May 2013 - 07:36 PM

Rick,
Well, yeah - not seen it before. But nice catch. Since its not on your to do list, I'll bet you typo'ed it on you imaging session.

#4 Rick J

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Posted 26 May 2013 - 08:52 PM

Jim,

Apparently I'd not seen it before either!

I recorded it correctly in my log so it wasn't a typo. That's happened but not this time. It is listed in The Sky's database as SAC PK 62-0.1. My only guess is there was nothing on the to-do list within my limit of 2 hours of the meridian and somehow this one got picked. Why, I still don't know. I probably thought it bigger than it was though The Sky lists it at 0.1x0.1 minutes or 6"x6" so it was obviously very small. It's not in my visual log so not an attempt to image something I'd seen.

Maybe if I wasn't 9 months behind in my processing I'd remember these things.

Rick

#5 Ron (Lubbock)

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Posted 26 May 2013 - 10:17 PM

By coincidence I was looking through catalogues of planetary nebulae this evening and last, including Abell and Minkowski objects and a few even lesser known catalogues, and still don't remember seeing this one! I don't think I would ever take the initiative to image something 6" in diameter, so thanks for sharing it.

#6 lunar

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Posted 27 May 2013 - 09:53 AM

Nice image Rick! I really like this one.

#7 microstar

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Posted 27 May 2013 - 11:52 AM

You're right - I've never heard of, let alone seen, this one before. Nice catch.
...Keith

#8 jshalpha

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Posted 27 May 2013 - 09:29 PM

Nicely done Rick.

Jim S.

#9 Lionel M

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Posted 28 May 2013 - 08:23 AM

More of a mystery is why I imaged it in the first place. I

normally keep good notes about this but drew a complete blank on this one. I can't even find it in my to-do list yet I took it anyway. I also come up blank for any amateur images of it on the net. I did file it under one of its catalog names so knew what I was taking. The why is totally lost however. So this is a short entry.


Maybe somebody else took this image with your own scope :)

Nice image !

#10 Rick J

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Posted 28 May 2013 - 03:05 PM

Thanks for the comments. Not much to look at! Next up is another you've likely never seen either. Only a bit more photogenic. But I do know why I imaged it!

Rick






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