Part of the Patrick Moore's Practical Astronomy Series book series (PATRICKMOORE)


Our first target, the Christmas Tree Cluster, is a fine deep-sky object in the faint constellation Monoceros the Unicorn. At magnitude 3.9, this grouping of stars is easily bright enough for you to spot with your naked eyes, albeit as an indistinct fuzz ball. To find it, look 3.2° south-southwest of magnitude 3.4 Xi (ξ) Geminorum.


Open Cluster Central Star Planetary Nebula Bright Star Double Star 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.MilwaukeeUSA

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