Cold Clear Nights of Galaxy Groups & Clusters

Here are four Galaxy Groups & Clusters for your amazement and amusement. The first is Additional Group #45 (NGC 7103 Group). I could see three out of the seven plotted galaxies, two NGC’s and one IC, ranging in magnitude from 12.6 to 15.5. The IC was just a tiny smudge with a stellar nucleus.

GG&C Add'l Galaxy Group (NGC 7103 Group) - Copyright (c) 2013 Robert D. Vickers, Jr.

GG&C Add’l Galaxy Group (NGC 7103 Group) – Copyright (c) 2013 Robert D. Vickers, Jr.

Next is Abell Cluster #45 (Abell 3744). This is a large cluster of up to 70 galaxies but the only galaxy that I could see other than the #41 Trio (included in the cluster) was PGC 66149 (MCG-4-49-16) at a listed magnitude of 16.1. Disappointingly, everything else was too small or too dim for my increasingly light polluted skies.

GG&C Abell#45 (Abell 3744) - Copyright (c) 2013 Robert D. Vickers, Jr.

GG&C Abell#45 (Abell 3744) – Copyright (c) 2013 Robert D. Vickers, Jr.

Additional Galaxy Group #46 was much better and I was able to see all four of the plotted galaxies. Magnitudes ranged from a bright direct vision 11.7 for NGC 7184 to 14.0 for NGC 7188. I looked for but could not spot the brighter ring in NGC 7184 that shows in photographs. Maybe from a darker location…?

GG&C Add'l Galxay Group #46 (NGC 7184 Group) - Copyright (c) 2013 Robert D. Vickers, Jr.

GG&C Add’l Galxay Group #46 (NGC 7184 Group) – Copyright (c) 2013 Robert D. Vickers, Jr.

Lastly was bright and easy Trio #49 (NGC 7769 Group). All three were direct vision galaxies, although little NGC 7770 at magnitude 13.8 required averted vision to spot initially.

GG&C Trio #49 (NGC 7769 Group) - Copyright (c) 2013 Robert D. Vickers, Jr.

GG&C Trio #49 (NGC 7769 Group) – Copyright (c) 2013 Robert D. Vickers, Jr.

Category(s): Amateur Astronomy

Leave a Reply

Your email address will not be published. Required fields are marked *

 

This site uses Akismet to reduce spam. Learn how your comment data is processed.