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Date: February 16th, 2007. Location: Mito, Ibaraki, Japan. Canon 200mmF2.8L lens (diaphragm F4.0) Takahashi Sky Patrol Ⅱ(TG-SP Ⅱ) equatorial mount Canon EOS Kiss Digital (Set up to ISO800) Exposure: 1min.×20 frames (total exposure time: 20min.) Image processed with StellaImage5, Cinepaint & The GIMP. |
Classifications are referenced from “THE DEEP SKY FIELD GUIDE for Uranometria 2000.0”.
NGC4540 (SAB(rs)cd Ⅳ) IC800 (SB(rs)c pec?) NGC4523 (SAB(s)m Ⅴ) IC797 (SBcd?) M91(NGC4548) (SA(rs)b Ⅰ-Ⅱ) NGC4516 (SB(rs)ab?) M88(NGC4501) (SA(rs)b Ⅰ-Ⅱ)