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ASTRO: Are 3 arms better than 2?



 
 
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  #1  
Old March 3rd 09, 10:54 PM posted to alt.binaries.pictures.astro
Rick Johnson[_2_]
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Posts: 3,085
Default ASTRO: Are 3 arms better than 2?

Arp 20, UGC 3014 made the Arp catalog for having three arms. One of
which seems to come out of bar at right angles to the other two that
come from the ends of the bar as they are "supposed to". It's red shift
data puts it about 190 million light years away. Thus it is a rather
small galaxy. I needed to image this on a night that I could use 0.5"
pixels but seeing conditions never were good enough so I settled for
this lower resolution 1" per pixel image. More detail can be seen in
Arp's Palomar image at:
http://nedwww.ipac.caltech.edu/level...ures/arp20.gif

14" LX200R @ f/10, L=4x10' RGB=2x10', 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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  #2  
Old March 4th 09, 03:15 AM posted to alt.binaries.pictures.astro
rod[_3_]
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Posts: 70
Default ASTRO: Are 3 arms better than 2?

Yes - I need a third and fourth arm. Super image Rick - thank you sir - Rod


Rick Johnson wrote:
Arp 20, UGC 3014 made the Arp catalog for having three arms. One of
which seems to come out of bar at right angles to the other two that
come from the ends of the bar as they are "supposed to". It's red shift
data puts it about 190 million light years away. Thus it is a rather
small galaxy. I needed to image this on a night that I could use 0.5"
pixels but seeing conditions never were good enough so I settled for
this lower resolution 1" per pixel image. More detail can be seen in
Arp's Palomar image at:
http://nedwww.ipac.caltech.edu/level...ures/arp20.gif

14" LX200R @ f/10, L=4x10' RGB=2x10', STL-11000XM, Paramount ME

Rick

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

  #3  
Old March 7th 09, 09:06 AM posted to alt.binaries.pictures.astro
Stefan Lilge
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Posts: 2,269
Default ASTRO: Are 3 arms better than 2?

Rick,

very good detail in this tiny galaxy.

Stefan

"Rick Johnson" schrieb im Newsbeitrag
ster.com...
Arp 20, UGC 3014 made the Arp catalog for having three arms. One of
which seems to come out of bar at right angles to the other two that
come from the ends of the bar as they are "supposed to". It's red shift
data puts it about 190 million light years away. Thus it is a rather
small galaxy. I needed to image this on a night that I could use 0.5"
pixels but seeing conditions never were good enough so I settled for
this lower resolution 1" per pixel image. More detail can be seen in
Arp's Palomar image at:
http://nedwww.ipac.caltech.edu/level...ures/arp20.gif

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