Naked eye & binocular targets
Jul 18, 2019
1 minute
![allabtspacuk1912_article_077_01_01](https://article-imgs.scribdassets.com/35oqilb1mo7n3plc/images/file9C51E76Z.jpg)
Messier 39
39 is a large open cluster, seven light years across and 824 light years from Earth. It contains around 30 stars. At magnitude 5.5
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