Re: [APML] Tech Pan 120 Hypering, Kodak Response.

[Jason Ware <jtw@galaxyphoto.com>]

OK, then if everyone will call Kodak Professional at ext 19 and
voice their concern maybe something will get done.

George Anderson wrote:
> 
> Sounds like this calls for a "Many thanks for your response about my
> using tech-pan 2415 outside its intended use. Myself and many other
> astrophotographers worldwide look forward to the re-issue of techpub
> P-255 correcting the misleading information contained in the upper right
> hand paragraphs on page 5 pertaining to astronomical photography. It is
> well known that the film is vitually blind for astrophotography due to
> reciprocity law failure without the benefit of gas hypersensitization
> (Parker, Malin, et al AASO paper 1988(?))." With the appropriate CC's
> via snail mail to the Director of Scientific Applications and the
> Director of Technical Publications.
> I have the URL for the PDF of the Parker/Malin paper at work.
> When I worked in Customer Support I would have been introduced to the
> back door in a heartbeat if I had ever told a customer that their
> attempted use of a flight simulator was outside of the normal operating
> realm without verifying their use against the contract and marketing
> hyperbola.
> 
> George Anderson
> Montreal Canada
> 
> Clear skies and good health
> 
> Jeff Crilly wrote:
> >
> > I thought one of the "other" issues with hypered techpan
> > was the problem of film curl.  Hence a vacuum back was sorta
> > needed, which requires removing the paper.
> >
> > Why not just remove the paper from the 120 techpan, hyper it,
> > and use the camera on the 220 setting?  (whether or not the
> > vacuum back is in use.)
> >
> > (Too bad its not available in a 220 format.)
> >
> > Btw, from the Kodak website techpub on 2415...
> >
> > > You can use these films for stellar photography, but first
> > > hypersensitize them with forming gas or silver nitrate to
> > > improve the film response with the long exposures required.
> > > (For information on hypersensitization of Technical Pan Films,
> > > see the American Astronomical Society Photo-Bulletin,
> > > Issue No. 24, 1980, No. 2.) "
> >
> > Sounds like "intended use" to me.
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-- 
 -Jason Ware 

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