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Re: [APML] LUM with IR cutoff



Hello,
 
   I have been running around trying to get ready for the OSP but I did find a few minutes to slap together some data I have from NGC 6946... I tried shooting some RGB and then combining it with a LUM that was made with IR cutoff... my impression is that this is a good thing... the LUM "fit" exactly into the RGB at 100% and it seemed to me there was plenty of detail showing in the LUM... I uploaded the LUM and a very crummy RGB to a secret spot on our web site:
 
http://www.astrophoto.com/LUM.jpg
 
and
 
http://www.astrophoto.com/NGC6946.jpg
 
     One thing that bothers me is the strange "arcs" coming off the top of the star on the left... I am shooting with a pure reflector... any ideas where that could be happening? 
     At any rate, these are kind of "raw" images but maybe you might want to see what happens with the IR cutoff in the LUM.
 
     Have a good one,
 
          Tony