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ASTRO: Open cluster IC 166



 
 
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  #1  
Old December 21st 11, 08:25 AM posted to alt.binaries.pictures.astro
Rick Johnson[_2_]
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Posts: 3,085
Default ASTRO: Open cluster IC 166

IC 166 is an open cluster in Cassiopeia. It is about 10,750 light years
from us by one paper I found. The WEBDA puts it at 13,000 light-years.
Pinning down an open cluster's distance is still beyond the science in
most cases. It's age is estimated to be about 1.32 +/- 0.43 billion
years. Wide field images show it is seen at the edge of a weak dark
nebula so stars are likely reddened. It's age plus the dust likely
account for the rather red color of most of the stars in the cluster.

14" LX200R @ f/10, L=4x10' RGB=2x10x3, 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".

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Name:	IC166L4X10RGB2X10X3R-67.JPG
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  #2  
Old December 27th 11, 09:40 PM posted to alt.binaries.pictures.astro
Stefan Lilge
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Posts: 2,269
Default ASTRO: Open cluster IC 166

Rick,

a very nice cluster, you did a great job of maintaining the star colours.

Stefan

"Rick Johnson" schrieb im Newsbeitrag
.com...
IC 166 is an open cluster in Cassiopeia. It is about 10,750 light years
from us by one paper I found. The WEBDA puts it at 13,000 light-years.
Pinning down an open cluster's distance is still beyond the science in
most cases. It's age is estimated to be about 1.32 +/- 0.43 billion
years. Wide field images show it is seen at the edge of a weak dark
nebula so stars are likely reddened. It's age plus the dust likely
account for the rather red color of most of the stars in the cluster.

14" LX200R @ f/10, L=4x10' RGB=2x10x3, 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".



 




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