The Whirlpool Galaxy (M51) under a light-polluted urban sky

Posted by jmeriaux
on Saturday, April 24, 2010

My place is very challenging for deep sky imaging and is a better match for planetary imaging. I have to use a great deal of anti pollution filter and processing... but I got some good results there.

San Bruno CA, near the SFO airport (high degree of light pollution!)

Celestron SCT 9.25" on Orion Atlas  - taken at prime focus with a QHY8 Color Camera cooled down at -40C

6 exp. of 360sec and 17 exp of 240sec

Guidescope Orion Short tube 80mm and orion autoguider

Anti pollution Filter Astronomik CLS CCD

Transparency 3/6

MaximDL, Photoshop CS4 and Neat image

 More on

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