Re: [APML] TechPan Hypering with high vacuum

["William R. Mattil" <wrmattil@ix.netcom.com>]

* wrote:

>I'm sure this is an old can of worms but... Where are
>the best links for "personal best techniques" for
>hypering Techpan in 120? I have a Lumicon 600 setup
>with both temp probes and a high vacuum pump. I've
>heard that the later emulsion can be hypered in the
>paper backing without the Kodak Nebula problem. If
>possible I would like to remove the backing after
>hypering for use with a vacuum back camera. My main
>interest is with the use of the high vacuum pump and
>how many cycles are needed to dry the film before
>hypering? I've also heard Nitrogen instead of forming
>gas can be used for the prehyper vacuum treatment? 
>
>Keith
>
>  
>
Keith,

Kent Kirkley is a frequent contributor to this group and he'll have the 
straight scoop. His hypering technique produces very consistant results 
under high vacuum.

Regards

Bill

Though the last I heard was that removing the backing was required.

-- 

William R. Mattil  :  http://www.celestial-images.com


_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo