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ASTRO: Quick and dirty M31 LRGB



 
 
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  #1  
Old August 1st 09, 10:56 PM posted to alt.binaries.pictures.astro
Richard Crisp[_1_]
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Posts: 985
Default ASTRO: Quick and dirty M31 LRGB

i shot some unfiltered lumnance last night of M31: 3.75 hours. I added that
to the color image (6 hours) taken last week to make an LRGB

this was a quick and dirty processing of the data using some old version of
photshop on my laptop.

I am curious to see how this will look when I can get back to my regular
computer for processing it.

Using the PL39000C one shot color in conjunction with the PL16803 for
luminance seems like a good way to go. The scope was an AP%%EDF f/7 with the
4" field flattener

The Luminance was shot last night with about 83% of the lunar disk
illuminated. The skies were reasaonably transparent it seems.




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  #2  
Old August 2nd 09, 05:50 AM posted to alt.binaries.pictures.astro
Rick Johnson[_2_]
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Posts: 3,085
Default ASTRO: Quick and dirty M31 LRGB

Richard Crisp wrote:
i shot some unfiltered lumnance last night of M31: 3.75 hours. I added that
to the color image (6 hours) taken last week to make an LRGB

this was a quick and dirty processing of the data using some old version of
photshop on my laptop.

I am curious to see how this will look when I can get back to my regular
computer for processing it.

Using the PL39000C one shot color in conjunction with the PL16803 for
luminance seems like a good way to go. The scope was an AP%%EDF f/7 with the
4" field flattener

The Luminance was shot last night with about 83% of the lunar disk
illuminated. The skies were reasaonably transparent it seems.



That laptop monitor must be dying. The image is way too bright on mine
losing a lot of detail and color.

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 August 2nd 09, 05:07 PM posted to alt.binaries.pictures.astro
Richard Crisp[_1_]
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Posts: 985
Default ASTRO: Quick and dirty M31 LRGB


"Rick Johnson" wrote in message
ster.com...
Richard Crisp wrote:
i shot some unfiltered lumnance last night of M31: 3.75 hours. I added
that to the color image (6 hours) taken last week to make an LRGB

this was a quick and dirty processing of the data using some old version
of photshop on my laptop.

I am curious to see how this will look when I can get back to my regular
computer for processing it.

Using the PL39000C one shot color in conjunction with the PL16803 for
luminance seems like a good way to go. The scope was an AP%%EDF f/7 with
the 4" field flattener

The Luminance was shot last night with about 83% of the lunar disk
illuminated. The skies were reasaonably transparent it seems.



That laptop monitor must be dying. The image is way too bright on mine
losing a lot of detail and color.



hmm, i just returned home and took a look at it on my monitor i will use to
process it afresh and it doesn't look too bright here

maybe your monitor is turned up a bit too hot? that may explain why your
backgrounds look pretty dark to me typically

anyway it is all academic because I plan to reprocess it today.



  #4  
Old August 2nd 09, 07:26 PM posted to alt.binaries.pictures.astro
Rick Johnson[_2_]
external usenet poster
 
Posts: 3,085
Default ASTRO: Quick and dirty M31 LRGB

Richard Crisp wrote:
"Rick Johnson" wrote in message
ster.com...
Richard Crisp wrote:
i shot some unfiltered lumnance last night of M31: 3.75 hours. I added
that to the color image (6 hours) taken last week to make an LRGB

this was a quick and dirty processing of the data using some old version
of photshop on my laptop.

I am curious to see how this will look when I can get back to my regular
computer for processing it.

Using the PL39000C one shot color in conjunction with the PL16803 for
luminance seems like a good way to go. The scope was an AP%%EDF f/7 with
the 4" field flattener

The Luminance was shot last night with about 83% of the lunar disk
illuminated. The skies were reasaonably transparent it seems.



That laptop monitor must be dying. The image is way too bright on mine
losing a lot of detail and color.



hmm, i just returned home and took a look at it on my monitor i will use to
process it afresh and it doesn't look too bright here

maybe your monitor is turned up a bit too hot? that may explain why your
backgrounds look pretty dark to me typically

anyway it is all academic because I plan to reprocess it today.


All your other images appear correct to me, just this one seems blown out.

I usually set my background to about a count of 15 or so out of 256. I
do like it rather dark rather than gray. This new monitor does show the
darker levels better but using a 24 step gray scale each level is
virtually an identical increase in brightness.

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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