October 1st 08, 11:01 PM
posted to alt.binaries.pictures.astro
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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
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