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Re: [APML] M35 (exposure times)

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>>>>> "sh" == Stuart Heggie <stuart.j.heggie@sympatico.ca> writes:

    sh> Geoff, you and Brian have some kind of magic working - 19
    sh> minutes at f/4 on 100 speed film and what a picture! My sky
    sh> fog limit is 40min at f/4 on 400 speed! I would have been
    sh> trying to go 160 minutes at f/4 on 100 speed film. I'm
    sh> beginning to suspect that it is me. Hmmmm.

FWIW, at my "dark" location, I have the same limit, about 40 minutes
at f/4 on E200.

I wonder if some of it my scanner, but the raw slides look better
(judged by eye on a light box) for the 40-minute exposures rather than
the 20-minute ones.

regards,

roland
- -- 
		       PGP Key ID: 66 BC 3B CD
Roland B. Roberts, PhD                             RL Enterprises
roland@rlenter.com                            6818 Madeline Court
roland@astrofoto.org                           Brooklyn, NY 11220

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