NGC6543 Cat's Eye Nebula in [OIII] from, 18" Cassegrain

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comparison shot (Isaac Newton Telescope)

Comparison shot (Stan Moore's RGB image)

Shot in my backyard in Castro Valley, Ca on June 29 and 30, 2005

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

IMG6303E camera @-35C

AO7 @ 10Hz

Image scale = 0.64 arc-sec/pixel

RCOS Dichroic beam splitter

ST10XME guide camera

FLI CFW1 Filter wheel

Astrodon 6nm [OIII] filter

22  exposures of 10 minutes through [OIII] filter binned 2x2

Three hours and forty minutes total exposure time

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