Cederblad 90 (CED 90) end of Seagull Nebula in Halpha

click image to enlarge, click here for maximum resolution

Taken on March 9 and 15, 2005 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 @ -40C

AP80/900mm guidescope

SBIG ST7E guide camera

FLI CFW1 color filter wheel

AstroDon 6nm FWHM Halpha filter

6 exposures of 30 minutes through Astrodon Halpha filter

Three hours total exposure time

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