Galaxy Groups and Clusters Observing Guide: Program Catalogue

Galaxy Groups and Clusters Observing Guide

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Program Catalogue

The Galaxy Groups and Clusters in this observing program consist of objects selected from four categories plus one additional challenge object:

50 relatively compact, isolated galaxy trios from the Atlas of Compact Galaxy Trios, compiled by Miles Paul (see footnote #1of the trio list for reference).

99 Hickson Compact Galaxy Groups. The Hickson Catalogue comprises compact galaxy groups studied to determine the frequency of discordant red shifts within such groups. Well known groups such as Stephan’s Quintet and Copeland’s Septet as well as many very faint and challenging groups are included. This user-friendly Hickson Atlas with SkyView images and MegaStar charts was created by Miles Paul.

50 Additional Galaxy Groups. Some are relatively compact, isolated small groups. Others, including several Messier objects and their "companions," are more extended and not well-isolated from the surrounding field of galaxies.

50 Abell Clusters. Out of 4500 Abell galaxy clusters, we choose 50 among the brightest and most rewarding to view.

Einstein’s Cross. A quasar lensed by a galaxy (challenge object).