M81 IFN wide field (Andrei Gusan)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: 22 UMa · 24 d UMa · 27 UMa · Bode's Galaxy · Cigar Galaxy · M 81 · M 82 · NGC 2959 · NGC 2961 · NGC 2985 · NGC 3027 · NGC 3031 · NGC 3034 · The star 22UMa · The star 24UMa · The star 27UMa

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M81 IFN wide field

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M81 IFN wide field

Messier 81 (Bode's Galaxy) is a spiral galaxy about 12 million light-years away, in the constellation Ursa Major. Messier 82 (also known as Cigar Galaxy) is a starburst galaxy and is being physically affected by its larger neighbour, the spiral M81. Tidal forces caused by gravity have deformed M82 and this interaction has caused star formation to increase.

Most images of M81 and M82 will show the two galaxies, the surrounding stars and a few smaller galaxies here and there. But a deeper exposure will reveal that these galaxies appear wrapped in a thin nebulosity. This is the integrated flux nebula (IFN). A very very faint glow caused by the combined light of the stars of our home galaxy The Milky Way reflected and re-emitted by interstellar gas and dust.

The galaxies are not surrounded by this dust as dust is much closer to us than the galaxies - it just happens to look that way. Kind of like looking at the moon on a partially cloudy night.

Please note: The following tables are updated every 24 hours.

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
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

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
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
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.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
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	4613356
PixInsight job	S2PQ0JPWHS7AHV6UUQEN1A2RTQXBWADM
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h45m47s.86
RA (top/left)	09h27m14s.35
RA (top/right)	09h33m04s.15
RA (bottom/right)	10h01m03s.82
RA (bottom/left)	10h01m24s.77

Dec (center)	+70°26′56″.6
Dec (top/left)	+72°21′27″.2
Dec (top/right)	+68°18′53″.8
Dec (bottom/right)	+68°26′53″.6
Dec (bottom/left)	+72°31′04″.2

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M81 IFN wide field

M81 IFN wide field

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M81 IFN wide field

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