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M39 - An Open Cluster
From the author of   Welcome to the Universe in 3D
20:51 EDT Nov 2, 2010.
Starlight Express SXV-H9 on 4" Tak FSQ refractor at f/5.
R = G = B = 5*12 seconds.
![M39](m39-short-RGB-Log-928x693.jpg)
20:51 EDT Nov 2, 2010.
Starlight Express SXV-H9 on 4" Tak FSQ refractor at f/5.
R = G = B = 5*1.2 seconds.