M81 & M82 HaLRGB (Sergiy_Vakulenko)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's galaxy · Bode's nebulae · Cigar galaxy · M 81 · M 82 · NGC 3031 · NGC 3034 · NGC 3077

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M81 & M82 HaLRGB

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M81 & M82 HaLRGB

Messier 81 and Messier 82 galaxies are part of the M81 Group, a group of 34 galaxies in Ursa Major and Camelopardalis constellations. Due to the distance of approximately 12M light years from Earth, this group together with the Local Group (containing the Milky Way) are relative neighbors in the Virgo Supercluster. M81 is a grand spiral galaxy with a very active nucleus, "hosting" a super-massive black hole with a mass of around 70 million times the mass of our Sun. Running straight through the disk are some dusty lanes, reminding us of a probably violent past encounter with M82 (estimations are that this encounter happened between 50 and 100 million years ago). Near M81 we can see it's companion, the dwarf irregular galaxy Holmberg IX. M82, sometimes called the Cigar galaxy due to it's edge on view from Earth, is the brightest galaxy in the night sky in infrared light, being a lot brighter in infrared than in the visible part of the spectrum. It is a starburst class galaxy that got caught in a gravitational struggle with M81 for past billion years. M82 is famous for its heavy star forming activity and the outburst of ionized hydrogen that can be seen in this photo as jets almost perpendicular to the galaxy disk. Around 100 newly formed globular star clusters have been discovered in this galaxy by Hubble Space Telescope. Many of the newly formed stars are so massive that they have a relatively short life and at the end of it, they explode as supernovas and drive gas and matter out of the galaxy at speeds of millions of kilometers per hour. It is thought that in this way, the elements like oxygen and carbon are spread through the universe.
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KODAK 8300 sensor

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Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
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Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
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Mix of multiple sources
Other
Unknown

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.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	3055150
PixInsight job	JRU9VXHZTW9R08D8S4HJ485NPB0Y9CET
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	09h55m40s.64
RA (top/left)	10h05m25s.21
RA (top/right)	10h07m19s.43
RA (bottom/right)	09h45m12s.31
RA (bottom/left)	09h44m42s.13

Dec (center)	+69°16′52″.1
Dec (top/left)	+68°28′51″.2
Dec (top/right)	+69°53′44″.9
Dec (bottom/right)	+70°02′36″.8
Dec (bottom/left)	+68°37′13″.4

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M81 & M82 HaLRGB

M81 & M82 HaLRGB

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M81 & M82 HaLRGB

M81 & M82 HaLRGB

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