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ASTRO: IC1311



 
 
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  #1  
Old July 21st 10, 10:37 PM posted to alt.binaries.pictures.astro
Stefan Lilge
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Posts: 2,269
Default ASTRO: IC1311

IC 1311 is the open cluster to the upper left in this image. The image is
rotated by 180 degrees (south up, west left) as this is the direction
pictures appear on my screen with the Atik383 camera and AstroArt. I liked
this orientation better and kept it.
I had some guidescope shifting which limited exposure times to 5 minutes.

Taken from the middle of Berlin with a Skywatcher ED80 plus Skywatcher 0.85
reducer on a Skywatcher H-EQ5 Synscan mount, Atik 383L+ camera, Baader
filters, 29x5 minutes Ha, 5 minutes each G and B. Combined to a Ha:Ha:G:B.
This method does not show convincing Halpha-red, but at least I get star
colours with only 10 minutes of additional exposure time compared to a
"pure" Ha image.

http://ccd-astronomy.de/temp4/IC1311coloursmallgut.jpg

Stefan




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  #2  
Old July 22nd 10, 02:37 AM posted to alt.binaries.pictures.astro
Rick Johnson[_2_]
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Posts: 3,085
Default ASTRO: IC1311

On 7/21/2010 4:37 PM, Stefan Lilge wrote:
IC 1311 is the open cluster to the upper left in this image. The image is
rotated by 180 degrees (south up, west left) as this is the direction
pictures appear on my screen with the Atik383 camera and AstroArt. I liked
this orientation better and kept it.
I had some guidescope shifting which limited exposure times to 5 minutes.

Taken from the middle of Berlin with a Skywatcher ED80 plus Skywatcher 0.85
reducer on a Skywatcher H-EQ5 Synscan mount, Atik 383L+ camera, Baader
filters, 29x5 minutes Ha, 5 minutes each G and B. Combined to a Ha:Ha:G:B.
This method does not show convincing Halpha-red, but at least I get star
colours with only 10 minutes of additional exposure time compared to a
"pure" Ha image.

http://ccd-astronomy.de/temp4/IC1311coloursmallgut.jpg

Stefan


H alpha for L sure does a number on the cluster! I know it's about
between two bright stars that I found easily but I had to look hard to
find the cluster stars.

Fine image for all your problems and light pollution.

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".
  #3  
Old July 23rd 10, 11:17 PM posted to alt.binaries.pictures.astro
Glen Youman
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Posts: 177
Default ASTRO: IC1311

That area of sky is like the "sea sirens" of Roman folklore - it is a
tempting seductress that will draw you in with it's rich views.

On Wed, 21 Jul 2010 23:37:06 +0200, "Stefan Lilge"
wrote:

IC 1311 is the open cluster to the upper left in this image. The image is
rotated by 180 degrees (south up, west left) as this is the direction
pictures appear on my screen with the Atik383 camera and AstroArt. I liked
this orientation better and kept it.
I had some guidescope shifting which limited exposure times to 5 minutes.

Taken from the middle of Berlin with a Skywatcher ED80 plus Skywatcher 0.85
reducer on a Skywatcher H-EQ5 Synscan mount, Atik 383L+ camera, Baader
filters, 29x5 minutes Ha, 5 minutes each G and B. Combined to a Ha:Ha:G:B.
This method does not show convincing Halpha-red, but at least I get star
colours with only 10 minutes of additional exposure time compared to a
"pure" Ha image.

http://ccd-astronomy.de/temp4/IC1311coloursmallgut.jpg

Stefan

 




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