RE: [APML] question on HorseHead shot

["Andy Forsberg" <CS-Imaging@prodigy.net>]

Hi Bobby,

Well I think the nebulosity is really there. It is in my shot of that
region.
http://pages.prodigy.net/cs-imaging/

I could bring more of it out with a little more adjustments in PS levels but
it blows out the HH. But I see that 7 shaped nebulosity to the right and up
from the HH on most good shots. So I guess it is there. I don't think it is
processed in.

Regards Andy

-----Original Message-----
From: owner-astro-photo@seds.org [mailto:owner-astro-photo@seds.org]On
Behalf Of Bobby Middleton
Sent: Monday, December 23, 2002 3:36 AM
To: astro-photo@seds.org
Subject: [APML] question on HorseHead shot

This shot is pretty deep and the question I have concerns the nebulosity on
the right side of the image. I don't see this on most shots of this region,
but there are hints of it on one of my images. Is this nebulosity really
here or has it been overly enhanced (even created?) from differential
reciprocity failure of the green and blue layers of the E200 out at the edge
of the frame caused by light fall-off and vignetting?
Bobby Middleton



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