NGC2359 Thor's Helmet in Halpha from Stinger 450 Classical Cassegrain and FLI IMG1024S Dream Machine

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Taken on January 5, 2007 from my backyard in Castro Valley, California under near full-moon conditions

Stinger 450 Classical Cassegrain (18" f/12.6)  

Lumicon Giant Easy Guider with Focal reducer for final: F= 3366mm, f/7.1

Finger Lakes IMG1024S Dream Machine  imaging camera operated at -40C

Robofocus

Finger Lakes CFW1 Filter wheel

SBIG ST7E guide camera

Custom Scientific 3nm FWHM Ha filter (50mm diameter)

10 exposures of 30 minutes through Halpha filter

5 hours total exposure time

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