M81, M82, Holmberg IX, PGC28731 (Carsten Krege)

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

M81, M82, Holmberg IX, PGC28731, Carsten Krege

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M81, M82, Holmberg IX, PGC28731

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M81, M82, Holmberg IX, PGC28731

I imaged the M81 group on Apr 28 and May 3, 2022 with my TS102/f7 and ASI294MC pro for 2h45min each. The third session was a complete failure, I just couldn't get into focus and have still no idea what has happened. I ended up with less than the 6h exposure I originally planned but due to vacation plans and nights being too bright for a while I decided to process what I have.

The good thing is that I clearly pictured Holmberg IX a irregular dwarf galaxy and satellite of M81, in the picture slightly "above" M81. The galaxy was first described in 1950's. Also caught PGC28731 (at the left edge of the picture) which is a spherical dwarf galaxy and also belonging to the M81 group.

After the first session I updated all software components, including EQ6Mod, EQ6 firmware, ASCOM and ASI camera drivers. I guess this was the reason why the ASI camera had the gain set from 123 to 285. Of course I didn't realize before doing the processing and finding artifacts due to darks not matching the gain value I usually use.

Also first time I tried to use Permanent Periodic Error Correction on the EQ6. Didn't make much of a difference and in my eyes didn't really add anything other than trouble.

Also added the Skywatcher 50ED as a new guidescope. Really recommend it, it's just a joy to see pinpoint stars when guiding.

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Status	Basic success
Started	...
Astrometry.net job	5827357
PixInsight job	n/a
PixInsight queue size	n/a
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M81, M82, Holmberg IX, PGC28731

M81, M82, Holmberg IX, PGC28731

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M81, M82, Holmberg IX, PGC28731

M81, M82, Holmberg IX, PGC28731

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