M81,M82

Imaging information

Optics: Takahashi BRC250、 NJP Temma2 Mount

Camera: SBIG STL-11000XM, Astronomik Type2C LRGB filters,Ha filter

Exposure: L=80min(10min×8)，R=20min, G=20min, B=20min, Ha=20min(HRGB:2x2binned)

Software: Stellaimage5, PhotoshopCS

Location: Yoshinaga town, Okayama Prefecture, 2007