M27 in Halpha from Stinger 450 Classical Cassegrain and FLI IMG1024S Dream Machine with Custom Scientific Filters

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Taken on July 5, 2007 from my backyard in Castro Valley, Ca.

 

Stinger 450 Classical Cassegrain (18" f/12.6)  

 

Finger Lakes IMG1024S Dream Machine  imaging camera operated at -30C

Lumicon Giant Easy Guider with Focal Reducer

SBIG ST7E guide camera

Robofocus

Finger Lakes CFW1 Filter wheel

Custom Scientific 4.5nm FWHM Ha filter (50mm diameter)

7 exposures of 20 minutes through Halpha filter

2 hours 20 minutes total exposure time

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