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ASTRO: 4 h 20 min Halpha in the Propeller Nebula (dwb111)



 
 
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  #1  
Old August 3rd 08, 06:20 PM posted to alt.binaries.pictures.astro
Richard Crisp[_1_]
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Default ASTRO: 4 h 20 min Halpha in the Propeller Nebula (dwb111)

Taken from my backyard in castro valley ca, using the 18" at f/12.6 (5760mm)
and the Proline 9000 with a Baader Halpha filter (50 x 50 mm sq)





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  #2  
Old August 3rd 08, 06:27 PM posted to alt.binaries.pictures.astro
John N. Gretchen III
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Default ASTRO: 4 h 20 min Halpha in the Propeller Nebula (dwb111)

That's a cook one Richard, nice job!

Richard Crisp wrote:
Taken from my backyard in castro valley ca, using the 18" at f/12.6 (5760mm)
and the Proline 9000 with a Baader Halpha filter (50 x 50 mm sq)





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John N. Gretchen III
http://www.tisd.net/~jng3
  #3  
Old August 3rd 08, 06:35 PM posted to alt.binaries.pictures.astro
Rick Johnson[_2_]
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Default ASTRO: 4 h 20 min Halpha in the Propeller Nebula (dwb111)



Richard Crisp wrote:

Taken from my backyard in castro valley ca, using the 18" at f/12.6 (5760mm)
and the Proline 9000 with a Baader Halpha filter (50 x 50 mm sq)


Even with that large chip it barely fits the FOV.

Filter wheels for square filters now. Keeps you buying filters as chip
size increases.

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".

 




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