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Old October 1st 08, 11:01 PM posted to alt.binaries.pictures.astro
John N. Gretchen III
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Posts: 460
Default Astro: A Cepheus Planetary NGC 7139

nice shot Rick

Rick Johnson wrote:
Milky Way wasn't quite as dense in Cepheus as it is was in Cygnus for
NGC6894. Still it makes for a nice setting. Note that most of the red
ring is due to NII not HII though there is some HII. The NII line is so
close to HII a 3nm filter is needed to separate the them. This however
is just a LRGB image.

14" LX200R @ f/10, L=4x10' binned 2x2, RGB=1x10' binned 3x3 (clouds
prevented a second set of color frames and this seemed sufficient so
never went back for more), STL-11000XM, Paramount ME

Rick


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John N. Gretchen III
http://www.tisd.net/~jng3