
Cosmic Challenge: Planetary Nebula GJJC-1
#1
Posted 01 August 2021 - 05:20 AM
Click here to view the article
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#2
Posted 02 August 2021 - 10:05 AM
Phil:
Sounds like a real challenge. I will definitely be pulling out the 22 inch for this one. I am further south than many here and I have a clean view of the southern horizon.
The charts look helpful.
I only have one question:
How do I find M22?
(Sorry for the silliness but I just couldn't resist..)
Edit: Sky Safari Pro does have GJJC-1 in it's database and with the Gala-extension, there's enough stars probably to star hop.
And thanks for the links..
Jon
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#3
Posted 04 August 2021 - 06:19 AM
Very cool target! I had my 80mm ES scope and ASI533MC Pro camera out tonight and I thought I might get familiar with the neighborhood before zeroing in on this, kind of like a dress rehearsal. So just the scope and camera on an AVX mount. No post processing but I did rotate these so north was up. The second one added an OIII filter.
Edited by Sky King, 04 August 2021 - 06:34 AM.
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#6
Posted 15 August 2021 - 03:26 PM
Here is my take on the elusive GJJC-1 planetary nebula. Not to hard to find with the right tools.
Orion XX14g, L-eXtreme filter (1.25"), ASI533MC Pro Camera (cooled to -10), darks, 4 sec exposure, gain 358, 5 min total exp.
Edited by Stargazer3236, 15 August 2021 - 03:37 PM.
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#7
Posted 16 August 2021 - 07:14 PM
Great challenge object! The first time I saw this planetary was with Larry Mitchell's 36" scope. Even with this aperture it still required blinking with an OIII to confirm the sighting. Since then I have bagged it with my 25" and 18" scopes.
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#8
Posted 16 August 2021 - 11:19 PM
Thanks for the mention in your very informative article, Phil. Sighting GJJC-1 was among the most difficult deep-sky observations that I've ever accomplished.
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#9
Posted 19 August 2021 - 03:55 PM
How do I find M22?
(Sorry for the silliness but I just couldn't resist..)
Oh, you may jest...
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#10
Posted 24 August 2021 - 09:21 PM
For a number of reasons it looks like I am not going any farther with this month's challenge. However it is a very interesting challenge and I hope to explore it further. If I get anywhere I will post a new thread. I'm not sure that my C11 would have had the needed resolution, but I will try it when I can. Great cosmic challenge and interesting background description, thanks!
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#11
Posted 22 June 2022 - 04:26 PM
Then I zoomed around the OIII picture and took my best guess. I will come back with a bigger scope to see if I was correct. This is just a 80mm warm up.
Here is my take on the elusive GJJC-1 planetary nebula. Not to hard to find with the right tools.
Orion XX14g, L-eXtreme filter (1.25"), ASI533MC Pro Camera (cooled to -10), darks, 4 sec exposure, gain 358, 5 min total exp.
Stack_111frames_444s_WithDisplayStretch_Bingo.jpg
Stack_111frames_444s_WithDisplayStretch.jpg
Unfortunately, those are tagging the wrong star as GJJC1 (or more accurately, its central star.) I have looked at various finder charts, papers and viewed this object on 6/20/22. It is slightly further NE. This is apparent in Bertrand Laville's finder charts and sketch (CN link), and the photo in Phil's article as well.
#12
Posted 22 June 2022 - 06:19 PM
Since I only have a 14 inch, I think I will wait for Pease 1 in M15, as it might be a tad easier.
https://www.messier....m015_ps1fc.html
Clear skies to you.
Edited by David Knisely, 22 June 2022 - 07:53 PM.