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RE: [APML] Irtis Nebula and M13 uploaded

Chris,

I see the same thing with my FS102 with DSLR at both F6 and F8.  I thought
that it was an issue with the DSLR noise.  Apparently, it may be something
with the FS102 system, or is it something associated with all systems?

Paul
http://www.paulandpeggy.com


-----Original Message-----
From: astro-photo-bounces@seds.org [mailto:astro-photo-bounces@seds.org] On
Behalf Of Chris Schur
Sent: Wednesday, September 22, 2004 1:05 PM
To: Discussion of Film Astrophotography
Subject: Re: [APML] Irtis Nebula and M13 uploaded

Alan, I finally figured it out, why your shots look a
bit peculiar - the vignetting is causing a green
center and purple outside.  You can see it best in the
thumbnails.  You need to break the images into the
individual RGB chanels, and remove the vignette
individually, then recombine.  Thats how I get rid of
multicolor vignettes.

I hope my 2 cents helps...


Chris
--- Alan Voetsch <alanv12952@yahoo.com> wrote:

> Hey all,
> 
> My Veil, M16, and NGC 281 are lost somewhere on the
> pbase site, but I
> have managed to get 2 more up. NGC 7023 (Iris
> Nebula) and M13 are now
> present.  
> 
> I just picked up my latest roll and I have another
> shot of the Iris
> Nebula that I may be able to combine with this one
> to improve it. It's
> awful little, but what the heck. Got some more of
> the Pacman and
> Cederblad-214 too. 
> 
> Please let me know if you run across any problems at
> this site or with
> the links:
> http://www.pbase.com/avoetsch12952/tak_fs102
> 
> Just click on the thumbnails.
> 
> Thanks,
> Alan
> 
> 
> 
> 
> 
> 		
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