M81 Group (Ani Shastry)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's Galaxy · Cigar Galaxy · HD85161 · HD85458 · HD86574 · M 81 · M 82 · NGC 3031 · NGC 3034 · NGC 3077

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M81 Group

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M81 Group

I captured this using a Dream Aerospace Systems Dreamscope 16" Newtonian at f/3.75, and an aging FLI PL 16803 CCD camera. L, R, G, B and Hydrogen-Alpha filters were used with a total of ~17 hours of data spread across 6 nights. I could have easily used 2x the data to bring out additional details in the wispy galactic dust, but I unfortunately no longer had access to this system, so I had to revert to significant processing to keep the noise at bay while stretching the data.

The M81 group of galaxies spans across the constellations Ursa Major (Big Dipper) and Camelopardalis as seen from the Earth, and includes M81 (Bode's Galaxy), M82 (Cigar Galaxy), and several others. The center of the group is approximately 11.5 million light years away from the Earth, and is estimated to have ~1.03 trillion solar masses! See if you can zoom into the picture and find all the tiny galaxies visible in the frame, it's like playing Where's Waldo!

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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
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	9079536
PixInsight job	NA0RD7ZEZ75ZH5EPIQU7FDUUEX3PMPSQ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h58m08s.70
RA (top/left)	10h05m28s.77
RA (top/right)	09h49m34s.58
RA (bottom/right)	09h51m17s.47
RA (bottom/left)	10h06m14s.32

Dec (center)	+69°12′49″.3
Dec (top/left)	+69°56′36″.5
Dec (top/right)	+69°49′46″.1
Dec (bottom/right)	+68°27′52″.10
Dec (bottom/left)	+68°34′22″.9

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M81 Group

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Contribution Index (beta):

M81 Group

M81 Group

Equipment

Acquisition details

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Comments

Acquired at

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