NGC281 Emission Nebula in Halpha

Ha only

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Ha [SII] [SII]

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Taken on November 15, 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

4 exposures of 20 minutes through Ha filter

4 exposures of 20 minutes through [SII] filter

2 hours 40 minutes total exposure time

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