M81 and M82 (jmarinotero)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's Galaxy · Cigar Galaxy · M 81 · M 82 · NGC 3031 · NGC 3034 · NGC 3077 · PGC 2719634 · PGC 2721118 · PGC 2724146 · PGC 2726822 · PGC 2727315 · PGC 2728713 · PGC 2728721 · PGC 2730097 · PGC 2730379 · PGC 2730409 · PGC 2730709 · PGC 2730975 · PGC 2731294 · PGC 2731756 · PGC 2732102 · PGC 2732338 · PGC 2732720 · PGC 2732797 · PGC 2732888 · PGC 2733060 · PGC 2733253 · PGC 2733286 · PGC 2733410 · And 22 more.

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M81 and M82

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M81 and M82

This is the first time I capture and process data from both the Esprit100/ASI2600MM Pro and the SVX140T/ASI6200MMPro on the same target. A nice "accident" is that those two combinations produce a very similar field of view, so I complemented the SVX140T data with a bit of color data from the Esprit. I think it helped with the SNR and I think I will be doing more of that to optimize data collection.

Processing this image was really tough. Imaging broadband from Bortle 8 is not for the faint of heart, to that I had to add a couple of challenges. The first one is almost 400 luminance full frame subs, stacking that took quite a bit of computer time. The second one one is that, to my surprise, the IFN is starting to show in this data, but it's not bright enough to be usable, so it creates some interesting challenges when processing the background. I could clip it but then the image loses dynamic range. I tried pulling it out but that would not work with such noisy signal. There is a hint of "dirt" in the background, not easy to see, but definitely there

NOVAC
Trevinca Skies

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Status	Advanced success
Started	...
Astrometry.net job	5663833
PixInsight job	2ULQXI9GYAVEN93SY82PLLF9DBSO6EVO
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h56m44s.582
RA (top/left)	09h48m23s.611
RA (top/right)	09h49m37s.760
RA (bottom/right)	10h04m21s.135
RA (bottom/left)	10h04m34s.872

Dec (center)	+69°19′25″.27
Dec (top/left)	+70°19′13″.44
Dec (top/right)	+68°16′32″.31
Dec (bottom/right)	+68°18′13″.36
Dec (bottom/left)	+70°21′05″.19

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M81 and M82

M81 and M82

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M81 and M82

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