From Wikipedia: NGC 2085 is an intermediate spiral galaxy in the constellation Ursa Major. This was fun and interesting target to photograph. The galaxy is deformed, and has a very unique shape due to it’s interaction, likely with the other nearby galaxies in the group. At one time it was believed that it may have been part of the M81/M82 group, however, current redshift measurements show that it is approximately 88 million lightyears away, much further than M81/82.
A close up of the galaxy group is shown below.
Processing
Processing was with PixInsight utilizing the RC Astro plugins. I, as usual leaned heavily on Lukmatico’s excellent tutorial for galaxy processing. I took these photos over 3 nights, and due to the extreme temperature variations we were experiencing at the time, one set of flats was not acceptable. I dealt with this via a series of masked stretches, to keep the uneven background suppressed. I may return to this image with either more data or by trying a synthetic flat technique.
Technical Card
Mount: Celestron AVX
Camera(s): ZWO ASI 2600mc pro, ZWO ASI 220 mini guide camera
OTA: Celestron C8 SCT with 6.3 reducer
Filters: None
Exposure: 350 Lights @ 120 seconds
Annotated Image
This annotation cover the NGC, IC, and PGC catalogues. If you look closely you will certainly find several other unmarked galaxies. The other galaxies of the group local to NGC 2805 are NGC 2820, NGC 2814, and IC 2458.
Sweetman Astrophotography 