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Date: January 24th, 2003. Location: Mito, Ibaraki, Japan. SIGMA APO TELE MACRO 300mm F4.0 lens (diaphragm F5.54) IDAS LPS-P1 Filter Vixen GP·D equatorial mount automatically guided with D80mm f560mm refractor + ST-V BITRAN cooled CCD camera BJ-41L(-18.0 °C) IDAS Type Ⅲ RGB separation filter R,G and B images were taken with 2×2 binning Exposure: L;5min. ×22 frames R,G and B;3 min. ×3 frames each LRGB composition (total exposure time 137min.) Image processed with StellaImage4 & The GIMP. |
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