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Old 21-03-2025, 11:17 AM
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joshman (Josh)
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SH 2-275 The Rosette Nebula (3 panel Mosaic in SHO)

The beautiful and oft-imaged Rosette Nebula.

This HII region lies at a distance of approximately 5,000 lightyears, and spans a region approximately 130 lightyears in diameter. The nebula is home to several thousand young stars that were born from the nebula itself. These stars emit radiation that excites the atoms in the nebula, which in turn causes them to emit radiation - thus producing the emission nebula we see.

When I first found out that this DSO has a second moniker of "The Flaming Skull Nebula," I knew that i had to do my best to try and represent that in an image. I'd previously found and represented the "Skull" aspect, but it took some time, patience, and luck with the weather to finally find and represent the "flames."

Click here to visit the Image on Astrobin, or

skip straight to the full resolution!




Thanks for looking!
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Old 21-03-2025, 11:25 AM
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kvmx (Nick)
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Wow!! Fantastic photo, panning in full resolution on a 4K monitor is incredible!! Lots and lots of fine delicate detail.
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Old 21-03-2025, 12:59 PM
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Quote:
Originally Posted by kvmx View Post
Wow!! Fantastic photo, panning in full resolution on a 4K monitor is incredible!! Lots and lots of fine delicate detail.

Thanks Nick!


Every so often my skies turn it on and really allow the quality of the Tak scope to shine.
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Old 21-03-2025, 04:45 PM
Leo.G (Leo)
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That is beautiful Josh!
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Old 22-03-2025, 08:12 AM
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joshman (Josh)
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That is beautiful Josh!

Thanks Leo!
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Old 22-03-2025, 08:55 AM
Startrek (Martin)
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Josh,
Nice Rosette , thanks for posting
We don’t see to many Rosettes on this forum due to its low traverse
Those RC plugin’s certainly clean up the atmospheric blur at low altitudes and resolve fine detail
Top notch
Well done !

Martin
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Old 23-03-2025, 09:58 AM
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joshman (Josh)
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Quote:
Originally Posted by Startrek
Josh,
Nice Rosette , thanks for posting
We don’t see to many Rosettes on this forum due to its low traverse
Those RC plugin’s certainly clean up the atmospheric blur at low altitudes and resolve fine detail
Top notch
Well done !

Martin

Thanks for looking Martin!


I think the Rosette is relatively well positioned for me, it hits a high of ~55 degrees, and spend ~6.5 hours above 30 degrees. The really sad part is that this 6 night project took 3 months to complete because of our poor summer weather patterns.


The atmospheric blur for my raw stacks is really minimal, My final Ha, O3, and S2 stacks have a (Pixinsight) measured Moffat4 FWHM of ~3.1 arc-seconds. Which I'm more than happy with.
The "AI" tools have been a blessing and a curse to the hobby, they too often get used (and abused) as a crutch to attempt to cover up poor technique, poor equipment configuration, and poor data. I can definitely understand the decision to not use them.


But, as with anything digital, the output is only as good as the input, and I've found that being ruthless during the frame culling has had the single biggest positive impact on my image quality.
I think my Raw data is about as clean as my equipment and conditions will allow, I've attached a 100% crop from the raw Ha stack to help illustrate that.


I've also got a few other (non-AI) techniques up my sleeve to really enhance the quality of the final result.
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Old 24-03-2025, 09:57 AM
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A beautiful image Josh. The FSQ is an amazing scope.

Greg.
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  #9  
Old 29-03-2025, 07:46 AM
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joshman (Josh)
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A beautiful image Josh. The FSQ is an amazing scope.

Greg.

Thanks Greg!


The image quality out of the Tak constantly surprises me when the skies are playing ball.


I had a very rare night of really good seeing back in Feb, PI's subframe selector measured some of my subs at ~1.8 arc-seconds FWHM.
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