Galaxy M101 Ha_rgb (mirko tondinelli)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: HD122865 · M 101 · NGC 5447 · NGC 5449 · NGC 5450 · NGC 5451 · NGC 5453 · NGC 5455 · NGC 5457 · NGC 5461 · NGC 5462 · NGC 5471 · Pinwheel galaxy

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Galaxy M101 Ha_rgb

Revision title: M101 new development

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Galaxy M101 Ha_rgb

Revision title: M101 new development

The Pinwheel Galaxy (also known as M 101, or NGC 5457) is a spiral galaxy in the constellation Ursa Major. The galaxy was discovered in 1781 by Charles Messier and Pierre Méchain. William Herschel was the first to observe small spots (which were actually fragments of spiral arms) surrounding the galaxy. In excellent condition, M101 can be observed even with simple binoculars; in fact, thanks to its extension and its relative proximity to us, M101 is one of the brightest galaxies in the sky. Its identification is easy, thanks to the presence of a striking concatenation of sixth and seventh magnitude stars to the east of the bright star Mizar. Its size requires the use of fairly low magnifications for its observation; However, a telescope of at least 250 mm is needed to begin to distinguish the brighter nucleus and the fragments of the spiral arms. The arms themselves offer, in good condition, a beautiful sight with a 400 mm wide-field telescope. Cit. Wikipedia.

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	Distinct awarded users	Total awarded images
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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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
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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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
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Status	Advanced success
Started	...
Astrometry.net job	9648092
PixInsight job	3TKXM3U711JPQST9BAB5N4FD3DHW4O0H
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h03m13s.215
RA (top/left)	14h05m00s.489
RA (top/right)	14h05m12s.353
RA (bottom/right)	14h01m23s.191
RA (bottom/left)	14h01m15s.729

Dec (center)	+54°22′03″.22
Dec (top/left)	+53°59′19″.80
Dec (top/right)	+54°43′39″.19
Dec (bottom/right)	+54°44′43″.28
Dec (bottom/left)	+54°00′24″.63

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Galaxy M101 Ha_rgb

Revision title: M101 new development

Galaxy M101 Ha_rgb

Revision title: M101 new development

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Galaxy M101 Ha_rgb

Revision title: M101 new development

Galaxy M101 Ha_rgb

Revision title: M101 new development

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