7 x 30 minutes (some with worse seeing)
7 x 30 minutes (some with worse seeing)
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9 x 30 minutes (some with worse seeing)
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5 x 30 minutes (best five exposures, less than 2.7" stars)
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4 x 30 minutes (best four exposures, less than 2.7" stars)
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To see this area in tricolor narrowband, click
here: 
Stinger 450 Classical Cassegrain (18" f/12.6)
Taken on July 21 and 22, 2006 from my backyard in Castro Valley, California
Lumicon Giant Easy Guider with Focal reducer for final: F= 3366mm, f/7.1
Finger Lakes CM10 MaxCam imaging camera operated at -20C
Robofocus
Finger Lakes CFW1 Filter wheel
SBIG ST7E guide camera
Custom Scientific 3nm FWHM Ha filter (50mm diameter)
Custom Scientific 3nm FWHM [SII] filter (50mm diameter)
Custom Scientific 3nm FWHM [OIII] filter (50mm diameter)
Seven exposures of 30 minutes in Halpha
Three and a half hours total exposure time