Galaxy NGC 891 and Galaxy Cluster Abell 347

Located right in constellation Andromeda, this photo is a classic of the autumn sky I have  recently dug up from my archives. The main highlight is NGC 891, a famous edge-on galaxy: however, I purposely chose not to focus on the brightest object (seen on the bottom left), but also to include the Abell 347 galaxy cluster (top right), whose most prominent member is elliptical galaxy NGC 910.

Being far away from the Milky Way plane, this field is chock-full of small galaxies. To ease spotting them in the field, I included an annotated version of the picture, and a “collage” containing close-ups of small galaxies taken from the same field, sporting a wide range of different sizes and shapes.

Acquisition data: taken on 12th and 13th October 2018, from Capanne di Cosola (AL, Italy) with a TS 130/910 refractor scope + flattener, a Moravian G2-8300 CCD camera. Composite of 410:120:100:130 minutes of exposure (L:R:G:B) in 10-minute subs for a total of 760 minutes (almost 13 hours). Processed in PixInsight and Adobe Photoshop.