M81

Imaging information

Optics: Takahashi MT-200，MS5 mount

Camera: ST-2000XM, Astronomik Type2C LRGB filter

Exposure: L:15min×8, RGB:10min×2

Software: Stellaimage5, PhotoshopCS

Location: Yoshinaga town, Okayama Prefecture，2006

Hoshi-Nabi magazine