NGC7635 Bubble Nebula in Hydrogen Alpha and [OIII]

click image to enlarge, click here for highest resolution

Taken on December 3 - 4, 2005 from my backyard in Castro Valley, Ca.

AP180EDT f/9 imaging scope

AP 0.75x Telecompressor

FLI IMG6303E imaging camera @ -26C

AP80/900mm guidescope

SBIG ST7E guide camera

FLI CFW1 color filter wheel

AstroDon 6nm FWHM Halpha filter

4 exposures of 1800 sec through Astrodon Halpha filter

6 exposures of 1800 sec through Astrodon [OIII] filter

5 hours total exposure time

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