click image to enlarge, clock here for highest resolution
[SII] = Red, Halpha = Green, [OIII] = Blue
Halpha channel
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Taken on November 19, 2005 from my backyard in Castro Valley, California
AP180EDT f/9 imaging scope used at f/6.75
AP 0.75x Telecompressor
FLI IMG6303E imaging camera @ -26C
AP80/900mm guidescope
SBIG ST7E guide camera
FLI CFW7 color filter wheel
6nm FWHM AstroDon Ha 50mm AR-Coated filter
6nm FWHM AstroDon [SII] 50mm AR-Coated filter
6nm FWHM AstroDon [OIII] 50mm AR-Coated filter
20 exposures of 90 seconds through Ha filter
20 exposures of 90 seconds through [SII] filter
20 exposures of 90 seconds through [OIII] filter
1 hour 30 minutes total exposure time