With Halpha enhanced HII regions (Ha+R)GB
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RGB only
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Taken on May 27, 2005 (RGB data) from Fremont Peak State Park near San Juan Bautista, Ca. and March 25, 2005 (Ha data) from my backyard in Castro Valley, Ca.
AP180EDT f/9 imaging scope used at f/6.75
AP 0.75x Telecompressor
FLI IMG6303E imaging camera @ -35C
AP80/900mm guidescope
SBIG ST7E guide camera
FLI CFW7 color filter wheel
Optec IR-Blocking 50mm RGB filters
6nm FWHM AstroDon Ha 50mm filter
3 exposures of 20 minutes through Red, Green and Blue filters
3 hours total exposure time (RGB)
9 exposures of 20 minutes through 6nm AstroDon Halpha filter (3 hours total)
6 hours total exposure for Halpha+RGB image