M101 (Torben van Hees)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 101 · NGC 3685 · NGC 5447 · NGC 5449 · NGC 5450 · NGC 5451 · NGC 5453 · NGC 5455 · NGC 5457 · NGC 5461 · NGC 5462 · NGC 5471 · Pinwheel galaxy

M101

Link: http://astro.van-hees.name

M101

Link: http://astro.van-hees.name

I know there's a lot of M101 images out there - but this is mine.

This took me some pretty time to finish: The first data was captured in spring 2020, as one of the first objects I ever imaged. I added some data in 2021, but it wasn't enough for a substantial improvement. This year I dedicated another clear week and captured with both the Epsilon and the RC. In all years, clouds interrupted all imaging nights. I think I'm beyond the point of diminishing returns here for Bortle 6 anyway. I'll return to this data when I've learned more about processing - currently, I've applied everything I know to this image.

M101 is one of the galaxies with large apparent size due to its comparable closeness of 21 million light years. It is about 50% larger than the Milky Way with a diameter of 170000 light years. It is deformed by the interaction with companion galaxies which compose most of the M101 group.

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Messier Objects
AstroBin Platform open discussions community forum
Imaged with Voyager
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Suburban Astrophotography
Astrophotography Germany

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Status	Advanced success
Started	...
Astrometry.net job	5791583
PixInsight job	STLG1ZMIC1IH2GFSERXX80T53ZYB7SC1
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h03m12s.490
RA (top/left)	14h01m12s.849
RA (top/right)	14h01m18s.749
RA (bottom/right)	14h05m09s.522
RA (bottom/left)	14h05m08s.401

Dec (center)	+54°20′56″.64
Dec (top/left)	+54°46′07″.34
Dec (top/right)	+53°55′18″.75
Dec (bottom/right)	+53°55′37″.75
Dec (bottom/left)	+54°46′25″.76

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