back M 51

Object: M 51 - Whirlpool Galaxy
Imager: Dipl.-Ing. Johannes Huwe
Date & Location: 4. april 2003, NMSkies
Optics / Telescope: Meade 16" LX200 SCT, SBIG ST1001E
Focal length f/ratio: 3000 mm @ f10 (no guiding)
Exposure: 80 min total, LRGB
L = 20 (40x30) sec, binning 2x2
R = 20 (40x30) sec, binning 2x2
G = 20 (40x30) sec, binning 2x2
B = 20 (40x30) sec, binning 2x2
Software: Camera control and image reduction with CCDSoft, RGB Combine in MaxIm DL, processed with Photoshop
Comments: Image Preview - Image prozessing not finished.
Conditions: Extrem windy (8-25 mph).
Object Info: The Galaxie is about 37 million light years away and is approximately 100.000 light years across. Visual brightness is 8.4 (mag).

Apparent Dimension 11x7 arc min.