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Thanks Sean, glad you like them!
I'll check out the Rosette
challenge in the archives.
I do find it very interesting the varying results in
photographing this object's color. Here are just a few that come to
mind. Also, Philip's mention of the lack of
OIII response in PJ400 is accurate in that the Rosette's color recorded in this
recent shot is slightly reddish/orange. My PPF image is more of a true
red.
Chris
No problem-
Nice new shots, BTW.
I'd
refer to the old processing challenge last year for getting the most out of
that Rosette shot, myself. Also I think you should be doing longer exposures
before stacking- ignore that sky fog myth,so the grain will be even less
apparent. just my 2 cents.
Sean Walker
Chris & Jennifer Cook wrote:
I wasn't aware of using the 400F for
deep sky work. Thanks Sean for pointing John's images out. I
was aware he had been using 100F on planetary
nebs. Chris ==================
Chris Cook
Astronomical Photography
www.abmedia.com/astro
-----Original
Message-----
From: Tony Hallas <tonyhallas@foothill.net>
To: astro-photo@seds.org <astro-photo@seds.org>
Date: Saturday, December
08, 2001 12:58 PM
Subject: Re: [APML] Provia trails
Chris, Isn't it Provia 400 F that is all the rage
right now in Japan for deep sky work? Has anyone tried this out for
deep sky with a telescope?
Tony
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