![Omicron-1 Cygni and More Double Stars from the September Observing List [Stellar Neophyte Astronomy Blog]](https://2.bp.blogspot.com/-2tYxKMWtuac/UjXw6EIxAlI/AAAAAAAAD-Q/R-bwxVt3qAY/s1600/omicron-1+cygni.jpg "Omicron-1 Cygni and More Double Stars from the September Observing List [Stellar Neophyte Astronomy Blog]")
Omicron-1 Cygni and More Double Stars from the September Observing List [Stellar Neophyte Astronomy Blog]
1800 new double stars for amateur observers : Nicholson, Martin P: Amazon.sg: Books
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double star astronomy: double star datasets
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Measures Of The Double Stars Contained In The Mensurae Micrometricae Of F. G. W. Struve: Collected And Discussed With An Introduction Containing ... Faint Stars And Various Other Information In: Lewis, Thomas,
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Resources | Star-Splitters
