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I agreeImaging telescope or lens:Skywatcher 100 Esprit APO F5.5
Imaging camera:QHYCCD QHY16200A Mono
Mount:10Micron GM2000HPS II
Software:sequence generator pro, Astro Pixel Processor, PixInsight 1.8
Filter:Baader Luminance
Accessory:ScopeDome 2M
Resolution: 9218x10945
Dates:Feb. 1, 2019
Frames:Baader Luminance: 1100x300" (gain: 1.00) -20C bin 1x1
Integration: 91.7 hours
Darks: ~120
Flats: ~50
Bias: ~256
Avg. Moon age: 26.50 days
Avg. Moon phase: 10.01%
Mean SQM: 20.80
Astrometry.net job: 3079905
RA center: 150.795 degrees
DEC center: 68.996 degrees
Pixel scale: 2.202 arcsec/pixel
Orientation: 0.982 degrees
Field radius: 4.377 degrees
Locations: Knight Observatory,Quinta Castelo Novo, Serra de Tomar, Portugal
Data source: Backyard
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
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