0Takahashi TOA-130　Bitran BT-218ME CCD camera
L10min.x13 R5min.x2 G5min.x2 B5min.x4
LRGB

NGC3031 M81 Galaxy in Ursa Major
09h55m38.5 +69 03 40 Mag(V) 6.9 Dim 26.9'x14.1' SB13.2 SA(s)ab I-II