M97 Owl Nebula in Halpha

click image to enlarge

Taken on February 9, 2006 from my backyard in Castro Valley, Ca

Finger Lakes IMG6303E imaging camera operated at -26C

Mark I series II 450mm f/12.6 classical cassegrain operated at 5760mm focal length

Finger Lakes CFW-7 filter wheel

SBIG ST7E guide camera operated at -5C

Lumicon Giant Easy Guider w/o reducer

Astro-Physics AP1200GTO mount

50mm Hydrogen Alpha Filter (6nm FWHM)

four 30 minute exposures

two hours total exposure time

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