RE: [APML] Comet NEAT and Beehive Cluster - need advice on processing

["Jeff Ball" <jeffball@astro-photography.com>]

Hello Phil,
It looks at first glance to be standard vignetting/uneven illumination.
Check out many of the techniques on Jerry L's site as well as Matt
BenDaniel's site (Google searches pull them up easily) for Photoshop
fixes.  I have found that it is difficult to cure this with one layer
iteration.  I like to approach uneven field illumination in small bites
with multiple iterations with each iteration of image stretching.  Good
luck in your processing.

Best regards,
Jeff Ball
www.astro-photography.com
 

-----Original Message-----
From: astro-photo-bounces@seds.org [mailto:astro-photo-bounces@seds.org]
On Behalf Of Phillip Jones
Sent: Monday, May 24, 2004 9:55 PM
To: APML
Subject: [APML] Comet NEAT and Beehive Cluster - need advice on
processing

Here is a 7.5 minute exposure on unpushed Provia 400 taken through a
105mm
lens at f/2.8. I attempted to scan this with my new film scanner, but I
am
getting some sort of haze in the middle of the pic. Notice to the right
of
the comet, it is nice and dark.

http://www.ruckuseffect.com/astro/comet_m44_a.html

-Phil
 

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