Open Cluster NGC1664

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<Image : Open Cluster NGC1664>
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<<Photography Data>>
Date:January 2nd, 2005.
Location: Mito, Ibaraki, Japan.
Canon EF200mm F2.8L lens (diaphragm F2.8)
  with Kenko 2× TELEPLUS PRO 300 (synthesized F5.6)
Vixen GP·D equatorial mount
automatically guided with D80mm f560mm refractor + ST-V
Canon EOS Kiss Digital (Set up to ISO200; Auto focus)
Exposure: 4min.×7 frames (total exposure time: 28min.)
Drak noise subtracted with RAP.
Image processed with StellaImage4 & The GIMP.

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