Reference image: 22 members of the M81 galaxy Group (Kees Scherer)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Bode's nebulae · IC 2574 · M 81 · M 82 · NGC 3031 · NGC 3034 · The star 22UMa · The star 24UMa · The star 27UMa

Reference image: 22 members of the M81 galaxy Group, Kees Scherer

Powered byPixInsight

Reference image: 22 members of the M81 galaxy Group

Powered byPixInsight

Reference image: 22 members of the M81 galaxy Group

I wanted to annotate my mosaic data (ref.6) with the M81 group members as listed in the Wikipedia article (ref. 1) and found extra information in a number of articles (ref. 2-5) that i used for a visual match with images made with large telescopes. This was not an easy task, but i could add/annotate 22 members ( of >33 in total). In image revision "Original" you can find a version also annotated with PGC catalog numbers. The image needs to be viewed in full resolution (to be able to read the text and see the actual dwarf galaxies.......).

ref.1:"Wikipedia: The M81 group"

https://en.wikipedia.org/wiki/M81_Group

ref. 2:"The M 81 group of galaxies: New distances, kinematics and structure"

https://www.aanda.org/articles/aa/pdf/2002/07/aa1940.pdf

ref.3:"Dwarf spheroidal galaxies in the M81 group imaged with WFPC2"

https://pdfs.semanticscholar.org/1c03/a8a1da90a8e139743335d50b4a70408261a0.pdf

ref.4:"Discovery of new dwarf galaxies in the M81 group"

https://arxiv.org/pdf/0805.1250.pdf

ref.5:"New Hydrogen Clouds in the M81 Group of Galaxies"

ref.6:"Volcano and Angel, Mandel-Wilson 15 panel annotated version"

https://www.astrobin.com/389783/?nc=user

ref.7:"DD78 and it's Globular Cluster, members of the M81 group"

https://www.astrobin.com/gxkxed/?nc=user

Original
Final
B

B

Description: M81 group annotations only.

Uploaded: ...

Deep Sky Mosaics
Cloudy Nights

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	Basic success
Started	...
Astrometry.net job	3249927
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

Reference image: 22 members of the M81 galaxy Group

Reference image: 22 members of the M81 galaxy Group

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

In these public groups

Image Index:

Contribution Index (beta):

Reference image: 22 members of the M81 galaxy Group

Reference image: 22 members of the M81 galaxy Group

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

In these public groups

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

Delete this revision?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information