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NGC 7139
Cepheus
Penryn, California
August 2003 / 2010
FS-128  (ag, ST-4)
ST-10XME RGB 15 minute subs (2003)
M 250 @ f9.3 (ag, ST-4)
ST-10XME Lum 10 minute subs (2010)

A mag. 13 planetary with a ring structure and a mag. 18 central star.