M101, NGC5474, Holmberg IV, SN2023ixf May 2023 (Michael Rex)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: 86 UMa · HD122007 · HD122149 · HD122471 · HD122865 · M 101 · NGC 5368 · NGC 5447 · NGC 5449 · NGC 5450 · NGC 5451 · NGC 5453 · NGC 5455 · NGC 5457 · NGC 5461 · NGC 5462 · NGC 5471 · NGC 5473 · NGC 5474 · NGC 5477 · NGC 5485 · Pinwheel galaxy · The star 86 UMa

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M101, NGC5474, Holmberg IV, SN2023ixf May 2023

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M101, NGC5474, Holmberg IV, SN2023ixf May 2023

M101 region, 7 hours on May 12 and 14, 1 hour (post-SN) on May 22. Stacked in PI WBPP, processed in StarTools 1.9 alpha preview.

Averaging and rejection of pre and post SN subs did not erase SN2023ixf, but resulted in a peculiar color (orange!) and a small edge artifact. Thus, star aligned LRGB stacks from only the 22nd were used to correct that and blend it back in properly with a layer operation, revealing the nice blue-white that it was presenting on that night. Seasonal May Gray prevented further SN acquisition so that a nice result of only post-SN could be stacked, and I was probably lucky to get the one clear hour that I did.

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Status	Advanced success
Started	...
Astrometry.net job	7794068
PixInsight job	77H0FDX99IEO1SI0I6B8OL63XCVDUUB4
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h00m29s.75
RA (top/left)	13h52m49s.17
RA (top/right)	14h08m08s.59
RA (bottom/right)	14h08m28s.91
RA (bottom/left)	13h52m35s.70

Dec (center)	+54°16′37″.4
Dec (top/left)	+53°30′18″.3
Dec (top/right)	+53°29′39″.8
Dec (bottom/right)	+55°01′02″.1
Dec (bottom/left)	+55°01′41″.9

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M101, NGC5474, Holmberg IV, SN2023ixf May 2023

M101, NGC5474, Holmberg IV, SN2023ixf May 2023

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Image Index:

Contribution Index (beta):

M101, NGC5474, Holmberg IV, SN2023ixf May 2023

M101, NGC5474, Holmberg IV, SN2023ixf May 2023

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