M1 Crab Nebula in [SII], Halpha and [OIII] from Stinger 450 Classical Cassegrain and FLI CM10 Maxcam

Click image to enlarge, click here for highest resolution

Taken on March 15,  31 and  April 1 - 3, 5, 9  2007 from my backyard in Castro Valley, Ca.

Finger Lakes CM10 imaging camera operated at -25C

Mark I series II 450mm f/12.6 classical cassegrain operated at 3366mm focal length (f/7.1)

Finger Lakes CFW-7 filter wheel

SBIG ST7E guide camera operated at -20C

Lumicon Giant Easy Guider w/o reducer

Astro-Physics AP1200GTO mount

50mm Baader Planetarium Halpha 7nm FWHM filter

50mm Custom Scientific [OIII] 3nm FWHM filter

50mm Custom Scientific [SII] 3nm FWHM filter

Three  exposures of 30 minutes through Halpha filter

Five  exposures of 30 minutes through [OIII] filter

Four exposures of 30 minutes through [SII] filter

six hours total exposure time