M81 and Holmberg-IX with foreground nebulosity (IFN) (Albert van Duin)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's Galaxy · ES UMa · M 81 · NGC 3031 · PGC 2724146 · PGC 2726822 · PGC 28505 · PGC 28529 · PGC 28757 · PGC 28848

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M81 and Holmberg-IX with foreground nebulosity (IFN)

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M81 and Holmberg-IX with foreground nebulosity (IFN)

Last night was a clear night, we had a few in a row, and I had no inspiration.
So I settled for 9 hours of M81 luminance to see what I would get.
I'm very pleased with the result, now I have to combine it with the colour data I am taking at this moment. This in a village with a sky with SQM20.4.
Holmberg-1, just to the left of M81, is also quite well resolved for my seeing conditions.
It's my first image since the grey days and nights started in November last year...

For the B-version I added 42 x 600s luminace and 6 x 600s each for RGB. I lost the IFN a bit in the process, will have to do that again.

The last revision is with noise reduction with NoiseXterminator on a 30% setting.

Original
B
Final
D
E

B

Description: Added a lot of luminance and some RGB

Uploaded: ...

D

Description: NoiseXtermintor reduces just a bit of noise at its 30% setting

Uploaded: ...

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Status	Advanced success
Started	...
Astrometry.net job	5549519
PixInsight job	CTIPAHGYA4O4LD095HULWR2K63NYUU4E
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h55m37s.620
RA (top/left)	10h00m23s.950
RA (top/right)	09h50m59s.700
RA (bottom/right)	09h50m58s.471
RA (bottom/left)	10h00m06s.490

Dec (center)	+69°04′04″.19
Dec (top/left)	+69°23′07″.52
Dec (top/right)	+69°24′08″.40
Dec (bottom/right)	+68°44′37″.52
Dec (bottom/left)	+68°43′38″.69

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M81 and Holmberg-IX with foreground nebulosity (IFN)

M81 and Holmberg-IX with foreground nebulosity (IFN)

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Image Index:

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M81 and Holmberg-IX with foreground nebulosity (IFN)

M81 and Holmberg-IX with foreground nebulosity (IFN)

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