Galaxy NGC4725

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<Image : Galaxy NGC4725>
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<<Photography Data>>
Date: January 29th, 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
BITRAN cooled CCD camera BJ-41L(-16.0 °C)
IDAS Type Ⅲ RGB separation filter
R,G and B images were taken with 2×2 binning
Exposure: L;10min. ×17 frames
R;7min. ×3 frames, G, B; 5min. ×3 frames each
LRGB composition (total exposure time : 221min.)
Image processed with StellaImage4 & The GIMP.

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