What is Caldwell catalogue

 The Caldwell catalogue is an astronomical catalogue.

It is created by Patrick Moore( well know amateur astronomer)

It consists of 109 star clusters, nebulae, and galaxies for observation by amateur astronomers. 

It is like a extension to Messier Catalogue( as it misses out some objects from Southern sky)



For more details refer to below link 

https://en.m.wikipedia.org/wiki/Caldwell_catalogue


Note - above information ( including image )is based on wiki link provided above.


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