Dwarf Spiral Galaxy UGCA 106
Posted: Thu Dec 31, 2020 3:09 pm
This text and image were uploaded to Astrobin this morning. The full res version is here: https://www.astrobin.com/rdpkmj/?nc=user
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Dwarf Spiral Galaxy UGCA 106
This small (1.7 arc minutes), dim galaxy is an elusive target. I believe this is the is the first time it has been imaged and published by an amateur.
On the other hand, with its bizarre morphology, UGCA 106 is a fascinating object. As stated in the Catalog of Southern Peculiar Galaxies and Associations, by Halton Arp and Barry Madore, “the outstanding problem in dwarf galaxies seems to be to explain why the grand spiral design becomes more and more disorganized and irregular as the dwarfs become lower in surface brightness, lower in luminosity, and presumably lower in mass.”
UGCA 106 is included in the Catalog as a peculiar galaxy, meeting the requirements of Category 20.
Tech Notes for ASA 500/3.6:
ASA Newtonian, 500 mm aperture, 1900mm focal length, F3.6
FLI Proline 16803, 9 mm pixel, 4096 X 4096
ASA DDM85 equatorial mount
Processing with PixInsight, StarTools, and Affinity Photo
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Dwarf Spiral Galaxy UGCA 106
This small (1.7 arc minutes), dim galaxy is an elusive target. I believe this is the is the first time it has been imaged and published by an amateur.
On the other hand, with its bizarre morphology, UGCA 106 is a fascinating object. As stated in the Catalog of Southern Peculiar Galaxies and Associations, by Halton Arp and Barry Madore, “the outstanding problem in dwarf galaxies seems to be to explain why the grand spiral design becomes more and more disorganized and irregular as the dwarfs become lower in surface brightness, lower in luminosity, and presumably lower in mass.”
UGCA 106 is included in the Catalog as a peculiar galaxy, meeting the requirements of Category 20.
Tech Notes for ASA 500/3.6:
ASA Newtonian, 500 mm aperture, 1900mm focal length, F3.6
FLI Proline 16803, 9 mm pixel, 4096 X 4096
ASA DDM85 equatorial mount
Processing with PixInsight, StarTools, and Affinity Photo
