Re: [APML] Long vs. Stacked Short Exposures

["Stuart Heggie" <stuart.j.heggie@sympatico.ca>]

There are more expert opinions on this list than mine but for film, I think you will be at risk of
fogging the film at f2.8 for 40 minutes. Depends on your skies of course. Provided you know how to
stack them, I'd do what you are proposing. If you live near me, your choice is moot since it is
going to rain tonight. Sigh.

Beauty in things exists in the mind that contemplates them.

Stuart
http://www3.sympatico.ca/stuart.j.heggie/Stuart.J.Heggie/
Flesherton, Ontario, Canada

----- Original Message -----
From: <RBissinger@aol.com>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Tuesday, August 10, 2004 11:23 PM
Subject: [APML] Long vs. Stacked Short Exposures


> I'm sure this has extensively been covered but I'm planning on doing some wide field shooting of
the Milky Way this weekend, and can expect to have a few Perseid meteors in my shots.  Maybe the
streaks will look good, but I was wondering if I'd be better off taking, say two 20 minute
exposures rather than a single 40 minute exposure?  If I took those two 20 minute shots, scanned
them, and stacked them, how close would I get to the results in a single 40 minute exposure?  I'll
be shooting E200 with a 28mm lens at f/2.8, thanks.
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