Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5457  ·  NGC 5461  ·  NGC 5473  ·  NGC 5474
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M101 Pinwheel Galaxy - 2023, Pete Bouras
M101 Pinwheel Galaxy - 2023
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M101 Pinwheel Galaxy - 2023

Getting plate-solving status, please wait...
M101 Pinwheel Galaxy - 2023, Pete Bouras
M101 Pinwheel Galaxy - 2023
Powered byPixInsight

M101 Pinwheel Galaxy - 2023

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Description

With some clear weather finally, I was able to add more data on this target.
This is an LRGB image, taken on 21 Apr 23 in Palmdale CA,  and 28 April 2022  at Mt Pinos CA

Had some wind at Mt Pinos dark site, so had to toss out a few subs, and the Palmdale data is in a Bortle 5 zone so fainter features are not as good.
But this is the best compromise I could come up merging the two data sets.

Standard LRGB processing, dynamiccrop, ABE, BlurX, LRGBcomb. for the RGB, and then SPCC.
Stretched L and RGB separately with GHS, and the stars image with arcsinh.
Curves on L and RGB, then combine L into RGB.
NoiseX, StarX, some curve work on stars, and starless, advsharpening
Screen stars back in with pixelmath.

Here is the previous effort using StarTools: https://www.astrobin.com/full/k2qqa8/0/

Thanks for looking!
Clear Skies
Pete

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M101 Pinwheel Galaxy - 2023, Pete Bouras

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