M51 Whirlpool Galaxy

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Taken on April 19, 2006 from my backyard in Castro Valley, Ca

Finger Lakes CM10 imaging camera operated at -26C

Mark I series II 450mm f/12.6 classical cassegrain operated at 3345mm focal length (f/7.3)

Finger Lakes CFW-7 filter wheel

SBIG ST7E guide camera operated at -15C

Lumicon Giant Easy Guider with reducer

Astro-Physics AP1200GTO mount

50mm Optec IR Blocking L filter

Eighteen exposures of 5 minutes through Luminance filter (binned 2x2)

one hour 30 minutes total exposure time

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