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ASTRO: NGC4631 pushed



 
 
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  #1  
Old February 20th 07, 09:54 PM posted to alt.binaries.pictures.astro
Rick Johnson[_2_]
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Posts: 3,085
Default ASTRO: NGC4631 pushed

This was taken from the same data as the color image. But when I pushed
it the colors went wild so converted it to black and white. Now instead
of the whale galaxy I see the bottle nosed dolphin galaxy complete with
tail flukes. Due to frost problems, mostly confined to the edges but
spotty throughout the image, I had to cut off the very dim part of the
data by subtracting a set amount from all pixels to get rid of the frost
effects. I need to redo this when the temp is warmer so more of the
faint tidal distortions can be seen. Still it shows a lot of distortion
in both galaxies.

14" [email protected]/10, L=8x5' binned 2x2, STL-11000M, 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 February 22nd 07, 07:37 AM posted to alt.binaries.pictures.astro
KLM[_4_]
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Posts: 2
Default ASTRO: NGC4631 pushed

This is an amazing photo to me.
jerry

Rick Johnson wrote:

This was taken from the same data as the color image. But when I pushed
it the colors went wild so converted it to black and white. Now instead
of the whale galaxy I see the bottle nosed dolphin galaxy complete with
tail flukes. Due to frost problems, mostly confined to the edges but
spotty throughout the image, I had to cut off the very dim part of the
data by subtracting a set amount from all pixels to get rid of the frost
effects. I need to redo this when the temp is warmer so more of the
faint tidal distortions can be seen. Still it shows a lot of distortion
in both galaxies.

14" [email protected]/10, L=8x5' binned 2x2, STL-11000M, 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".

------------------------------------------------------------------------
[Image]


  #3  
Old February 22nd 07, 04:57 PM posted to alt.binaries.pictures.astro
Rick Johnson[_2_]
external usenet poster
 
Posts: 3,085
Default ASTRO: NGC4631 pushed

Thanks,

With a lot more exposure time I think that upper arm of the companion
will arc over and back down to 4631 at the "bulb" part of the
"porpoise's head". That was hinted at in the data but lost in the
noise. I'd only exposed it for "normal" processing. Nothing but clouds
since and now the moon is getting in the way but clouds are to continue
for a while longer anyway.

Rick

KLM wrote:
This is an amazing photo to me.
jerry

Rick Johnson wrote:


This was taken from the same data as the color image. But when I pushed
it the colors went wild so converted it to black and white. Now instead
of the whale galaxy I see the bottle nosed dolphin galaxy complete with
tail flukes. Due to frost problems, mostly confined to the edges but
spotty throughout the image, I had to cut off the very dim part of the
data by subtracting a set amount from all pixels to get rid of the frost
effects. I need to redo this when the temp is warmer so more of the
faint tidal distortions can be seen. Still it shows a lot of distortion
in both galaxies.

14" [email protected]/10, L=8x5' binned 2x2, STL-11000M, 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".

------------------------------------------------------------------------
[Image]




--
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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