Re: [APML] New images

[steve banbury <banburys@sonic.net>]

Hi David--I've taken to leaving all my films in vaccum at room temp for
8 to 12 hours before starting the hypering activities.
No scientific measurements here, but it certainly hasn't done anything
bad to them. I also purge a couple times with dry nitrogen before and
after the soak.

Steve


David Gimenez wrote:

> Steve, The E200 was dissecated in vacuum at room temperature (20ºC).
> Working with other films (Kodak LE400 and Tech Pan) I found that a
> medium vacuum (50 microns approx. with a 2-stage rotary pump) during
> 24 H was enough to outgass all the water vapour without increasing the
> temperature; I guess E200 should be similar.Sorry, I have not
> performed any "scientific" test to demonstrate that the E200
> sensitivity is increased by the application of this process, but I
> have never observed a red response like that one using un-dissecated
> E200. David Gimenez i Rocamora
> Corbera de Llobregat
> mailto:davidanna@jazzfree.com
> http://eureka.ya.com/astrophoto/index.htm
>
>      ----- Original Message -----
>      From: Steve...
>      To: astro-photo@seds.org
>      Sent: Thursday, November 28, 2002 10:57 PM
>      Subject: Re: [APML] New images
>       David, I assume you mean that you dessicated the E200 in a
>      vacuum at elevated temperature. Have you done any tests to
>      confirm that this definitely improves the sensitivitiy? I
>      also believe that this does help the film but I haven't seen
>      anyone do a controlled test yet. Steve...
>
>           ----- Original Message -----
>           From: David Gimenez
>           To: APML
>           Sent: Thursday, November 28, 2002 11:00 AM
>           Subject: [APML] New images
>            I have posted some new Tak FS-128 images from
>           last dark period: Kodak E200 (the film was
>           previously outgassed to increase its
>           sensititvity): IC5070:
>           http://eureka.ya.com/astrophoto/english/i5070.htm hypered
>           LE400: M31:
>           http://eureka.ya.com/astrophoto/english/m31-tak.htmM45:
>           http://eureka.ya.com/astrophoto/english/m45-tak.htm hypered
>           Tech Pan (10 min on D-19) M31:
>           http://eureka.ya.com/astrophoto/eng-tp/m31.htmM33:
>           http://eureka.ya.com/astrophoto/eng-tp/m33.htm Comments
>           welcome David Gimenez
>           Corbera de Llobregat
>           mailto:davidanna@jazzfree.com
>           http://eureka.ya.com/astrophoto/index.htm
>



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