NGC281 Emission Nebula in [SII], Ha and [OIII]

Click image to enlarge, click here for maximum resolution

[SII] = Red, Halpha = Green, [OIII] = Blue

Taken on November 15 - 18, 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

5 exposures of 20 minutes through Ha filter

15 exposures of 20 minutes through [SII] filter

10 exposures of 20 minutes through [OIII] filter

10 hours total exposure time

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