Re: [APML] Films

["Bobby Middleton" <bobm@koyote.com>]

I don't think it's that bad. Just keep notes and when you get a batch right
stick with
the same proceedure. Most people are hypering PJ400 9-11 hours. 11 hours
over-hypers for me; I go 9.5-10 hours at 50 deg C and +3 psi.
Bobby Middleton

PS You'll love the st-4 but be patient for the learning curve. With an Meade
sct choose the "s" setting instead of "L" for focal length. It took me a
while to try
this.



> I read in the archives that it's a pain and a science to get the hypering
> process right. Any thoughts on that?  How long does it really take to
start
> getting it right?  I've gone through about 30 rolls of film on
> astrophotography, and still haven't figured out what film works best for
me.
>
> Thanks for the info.
> Frank
>
>
>
> ----- Original Message -----
> From: Mike Rogers <mrogers@idcomm.com>
> To: <astro-photo@seds.org>
> Sent: Monday, January 03, 2000 9:54 PM
> Subject: Re: [APML] Films
>
>
> > > Actually, now that I'm thinking of it, are there any places that sell
> gas
> > > hypered film on the Internet?  The obvious problem would be that it
> would
> > > have to be fed-ex'd or priority mail, then used right away... Can
> hypered
> > > film survive for longer times in a freezer?
> >
> > You can purchase hypered film from Lumicon. I'm not sure if they have
> PJ400
> > though. I seem to remember some concern with shipping hypered film
> > (especially in the summer months). I would hate for any of my film to
sit
> in
> > a Brown UPS truck over a weekend :-). I tend to stock up during the
winter
> > for this reason.
> >
> > I usually hyper about 2-3 canisters at the same time and freeze the
> > remaining film. I package the film carefully before freezing (double
> bagged
> > with desiccant in each bag). So far I have not been able to tell the
> > difference between the frozen and unfrozen hypered film.  The longest I
> have
> > had any roll in the freezer has been 2 months.
> >
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > Mike Rogers
> > <mrogers@idcomm.com>
> > <http://www.idcomm.com/personal/mrogers/>
> >
> > "That which we persist in doing becomes easier - not that
> > the task has changed, but our ability to do has increased."
> >                                              Ralph Waldo Emerson
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >
> >
> >
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>
>
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