Open Cluster NGC6791

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<Image : Open Cluster NGC6791>
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<<Photography Data>>
Date: June 14th, 2004.
Location: Mito, Ibaraki, Japan.
Vixen R200SS 200mm Newtonian (f800mm F4.0)
(with coma corrector lens for R200SS)
IDAS LPS-P1 filter
Vixen GP·D equatorial mount
automatically guided with D80mm f560mm refractor + ST-V
Canon EOS Kiss Digital (set up to ISO1600)
exposure: 1min. ×10 frames + 2min. ×5 frames
(total exposure time : 20min.)
Image processed with StellaImage4 & The GIMP.

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