Date:October 12th, 2002. Location: Johoku, Ibaraki, Japan. SIGMA APO TELE MACRO 300mm F4.0 lens (diaphragm F4.0) Vixen GP·D equatorial mount automatically guided with D80mm f560mm refractor + ST-V BITRAN cooled CCD camera BJ-41L(-8.0 °C) IDAS Type Ⅲ RGB separation filter R,G and B images were taken with 2×2 binning exposure: L;10min. ×7 frames + 15min. ×2 frames R,G and B;5 min. ×2 frames each LRGB composition (total exposure time : 130min.) Image processed with StellaImage3 & The GIMP. |