Arp 26

Posted by dcrowson
on Saturday, December 30, 2017

Arp 26 (M101, NGC 5457, UGC 8981, VV 344 / 344a / 456 and others) is a spiral galaxy located approximately 21 million light-years away in Ursa Major. It is part of Arp’s “Spiral galaxies with one heavy arm” class.

Luminance – 24x600s – 240 minutes – binned 1x1
RGB – 8x300s – 40 minutes each – binned 2x2

360 minutes total exposure – 6 hours

Imaged April 29th and 30th and May 1st and 2nd, 2016 from Dark Sky New Mexico at Rancho Hidalgo (Animas, New Mexico) with a SBIG STF-8300M on an Astro-Tech AT12RCT at f/8 2432mm.


I also captured around 10 hours of Ha data but never used it. I’m not overly happy with the results on this image – part of the reason why it has taken so long to post. If you have an interest, I can supply component FITs files.

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