RE: [APML] Schmidt Shot: IC443 to NGC2174

["Chris Schur" <cschur@therim.com>]

Alan, One fact of the supra film is that the halation is very bad.  This
causes red halos around nearly every star in the schmidt.  The reason is the
fast light cone disperses rapidly away from the star causing the halos.  Why
the red layer Im not sure, but thats the way it is.  I did remove a ton of
red in the background a few minutes ago, you many find it more palletable
now.

Chris

-----Original Message-----
From: astro-photo-bounces@seds.org
[mailto:astro-photo-bounces@seds.org]On Behalf Of Alan Voetsch
Sent: Saturday, March 19, 2005 1:28 PM
To: Discussion of Film Astrophotography
Subject: Re: [APML] Schmidt Shot: IC443 to NGC2174


Hey Chris,

Gotta love that wide FOV and those short exposure times.

I have to hope that what I see is a monoitor related problem, but these
shots are way too red, Almost all stars have red halos. Seems like I
did a couple like this but it turned out to be a processing mistake
(one of many) in PS.

Alan

--- Chris Schur <cschur@therim.com> wrote:
> http://www.schursastrophotography.com/filmimagepages/ic443.html
>
> Comments?


SCT Astrophotography: http://www.pbase.com/avoetsch/astrophotography
FS-102 G-11/Gemini: http://www.pbase.com/avoetsch12952/tak_fs102
& http://www.pbase.com/avoetsch12952/fs102
& http://www.pbase.com/avoetsch12952/takpf

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