M101

Object: M101
Optics: Takahashi TOA-150 f/7.3
Idas LPS filter
Camera: SBIG STL11Km
CCD temperature: -20°C
Exposure: 1X1 HA-720min(24X30m), R-348min(58X6m), (R+B)/2, B-348min(58X6m)
Mount: Takahashi EM-400
Image processing: Maxim DL, Photoshop
Quebec, Qc, Canada
April 24 - May 16, 2009