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Astro: A Cepheus Planetary NGC 7139



 
 
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  #1  
Old September 30th 08, 05:47 PM posted to alt.binaries.pictures.astro
Rick Johnson[_2_]
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Posts: 3,085
Default Astro: A Cepheus Planetary NGC 7139

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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Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

Rick

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  #2  
Old September 30th 08, 09:50 PM posted to alt.binaries.pictures.astro
Stefan Lilge
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Posts: 2,269
Default Astro: A Cepheus Planetary NGC 7139

Beautiful image Rick. I thought I had not imaged this one, but found an
image from 2001 (attached). My MX512 camera sometimes produced strange
"shadows" behind brighter stars...

Stefan

"Rick Johnson" schrieb im Newsbeitrag
ster.com...
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

--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

Rick





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  #3  
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


------------------------------------------------------------------------


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




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