M16 in [SII], Ha and [OIII] from RDC18 Cassegrain

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Taken on May 21, 2005 from my backyard in Castro Valley, Ca.

Compact Collapsible Cassegrain 18" @f/12.60 (F=5760mm)

IMG6303E camera @-35C

AO7 @ 1.2 Hz

RCOS Dichroic beam splitter

ST7E guide camera

FLI CFW1 Filter wheel

AstroDon 6nm FWHM [SII], Ha and [OIII] filters

3 exposures of 15 minutes through Ha and [SII] filters (binned 2x2)

4 exposures of 15 minutes through [OIII] filter (binned 2x2)

two and one half hours total exposure time


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