Open Cluster M39 (NGC7092)

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<Image : Open Cluster M39>
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<<Photography Data>>
Date: September 17th, 2001.
Location: Uchihara, Ibaraki, Japan
Vixen R200SS 200mm Newtonian (f800mm F4.0)
(with coma corrector lens for R200SS)
IDAS LPS-P1 filter
Vixen GP·D equatorial mount
guided with D65mm f1500mm reflector
Vixen VX-2 (focus adjustment with magnifier)
FUJIFILM SUPER G ACE 800, exposure : 25min.

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