M81

Object: M81

CCD: Sbig ST-8300M (-30C) with Starlight filter wheel

Filter: Astronomic Ha-12nm, LRGB filter set

Exposure: L 1200s X 7 (1 binning)

          R  400s X 4 (2 binning)

          G  400s X 4 (2 binning)

          B  400s X 4 (2 binning)

Image Processing: MaxIm DL 5, Adobe Photoshop CS5

Telescope : Astro Tech RC8 Carbon f/8

Mount : EM-200 Temma 2.

Guiding : Botd-77 Achromat / DIS2 Mono controled by MaxIm DL(Main relay)

Location: Hongcheon, Gangwon-do, Korea

Date: Dec., 22, 2011