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Contains:  IC 4263, IC4263, IC4278, M 51, M51, NGC 5194, NGC 5195, NGC5195, Whirlpool galaxy
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M51 - The Whirlpool Galaxy, 


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M51 - The Whirlpool Galaxy

Imaging telescopes or lenses: TPO 8" f/8 Ritchey-Chretien Astrograph

Imaging cameras: ZWO ASI 294MC Cooled

Mounts: CGE Pro

Guiding telescopes or lenses: Orion ShortTube 80

Focal reducers: Astro-Physics CCDT67 - 0.67x Reducer

Software: Sequence Generator Pro  ·  PHD2 Guiding  ·  PixInsight

Accessory: Optec TCF-S Focuser

Dates:June 6, 2019

Frames: 43x180" (gain: 120.00) -10C bin 1x1

Integration: 2.1 hours

Darks: ~25

Avg. Moon age: 3.31 days

Avg. Moon phase: 11.91%

Mean SQM: 21.10

Temperature: 18.00 job: 2734846

RA center: 13h 29' 52"

DEC center: +47° 11' 43"

Pixel scale: 0.431 arcsec/pixel

Orientation: -90.895 degrees

Field radius: 0.584 degrees

Resolution: 8040x5497

Locations: Seasonal Dark site, Morley, Michigan, United States

Data source: Traveller


M51 taken with my new ASI294MC-Pro camera. Since I do not get a lot of imaging time, traditional LRGB with a mono is tough to do. I figured a cooled OCS would increase my productivity so I purchased this camera based off a couple reviews and images I had seen.

I am struggling with calibrating and processing with this camera. The background is "large scale blotchy" have doing a ton of reading and processing, I found not using flats really made a big enough difference that I could complete processing to a point of being happy and posting it.

So the PI workflow was pretty basic: Calibrate, debayer, register, intergrate, drizzle 2x, DBE, BN, CC, MSLT, HT, LHE and then off to PS for some levels and curves.

Still have a lot of work to do, but now I have something to go on. My flat setup is a DYI with a sketching LED panel deal I got off Amazon. So I need to revisit how I do flats. Processing around no flats was not that bad in PI with DBE, but a couple of dust donuts are in there. Actually one I worked on PS with the stamp tool also. Hope it is not too apparent!

Made a commitment this year to image more from dark skies and not my red zone backyard, so I decided Thursday at work to haul all my gear for a night of imaging since the forecast was looking good. Hardest part was having to work the next morning, so I was dragging at the office the next day! But going from a SQM 18.1 sky to 21.1 in roughly 50min is well worth it!



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M51 - The Whirlpool Galaxy, 



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