Re: [APML] Viel exposure question...

["Rick Kellogg" <rkellog1@twcny.rr.com>]

Jeff,

I routinely use 60 min at F5.6 with E200 from a fairly dark site (1.6 times
brighter than the darkest sites).  It can go longer, depending on how dark
your skies are.

Rick




----- Original Message -----
From: "Jeff Crilly" <jlcapml@sbcglobal.net>
To: <astro-photo@seds.org>
Sent: Thursday, July 15, 2004 1:59 PM
Subject: [APML] Viel exposure question...


>
> I'm trying to shoot the whole veil on 6x7 film.
> (This is using the FSQ-106 @f5, so the FOV is fairly
> wide..
> I dont have the exact numbers handy, but it easily
> covers
> the whole area twice.  By "area", I mean the
> waterfall,
> witches-broom, and the brighter, thinner, nebula to
> the
> south.)
>
> So I tried 20min-40min exposures of provia400F with
> std processing, from a fairly dark location, but not
> incredibly dark.  (btw, I'm not using LPR filters).
> Some detail, but not much on the fainter parts of the
> nebula.
>
> I'm thinking of trying E200.  Iirc, E200 suffers from
> less
> reciprocity failure.  Is this correct?
>
> In addition, I may need darker skies, with less
> skyglow, and expose
> for, say 60 minutes, then push+2.
>
> Does this make sense?  Or do I just have wishful
> thinking
> that I can get a decent image of this on film?
>
> jeff
>
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