Re: [APML] Centuria 400 - Photographic Results II

["joe" <jmize@svic.net>]

Phil;

"...the only reason I didn't pursue it back in 1998 was that PJM-2 and PPF
were
available at the time..."

     I still have 20+ rolls of PJM in the freezer.  Did you hyper the PJM?
If so, how long, what temp temp, and did you use high vaccum?  Thkx...joe
:)


"May You Go Among The Imperishable Stars"

Joe Mize:     jmize@svic.net
StarFields Observatory   http://www.svic.net/jmize
Chiefland, FL    29:24'33.4"N    82:51'37.7"W
Moon Phase:     http://tycho.usno.navy.mil/cgi-bin/phase.gif

----- Original Message ----- 
From: "Philip Perkins" <pgp@astrocruise.com>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Sunday, June 20, 2004 7:20 PM
Subject: Re: [APML] Centuria 400 - Photographic Results II


> Chris,
>
> Very interesting and useful work.  Some of those results may be better
than
> they appear at first.  I tested this film sometime around 1998 and thought
> the results showed some promise.  Of course the film may have changed
since
> then.  At the time I thought the reds had a somewhat "muddy-brown" colour,
> but otherwise the Ha response was pretty decent.  One thing that is very
> good with this film is the OIII crossover - currently this may be one of
> the few colour neg films around that tries to record the visible spectrum
> accurately.  I think this film has potential and is worth testing
further -
> the only reason I didn't pursue it back in 1998 was that PJM-2 and PPF
were
> available at the time.  It's hard to understand why the quality problems
> exist - the rolls I tested all seemed to be fine.  Another thing worth
> mentioning is that there used to be a 120 format version of this film -
not
> sure if that's still the case.
>
> --Philip
>
>
> At 10:33 20/06/2004 -0700, you wrote:
> >Hi all,
> >
> >I cant believe the number of hours Ive spent on testing this film, I hope
> >its appreciated!  Anyway, here is the tracked telephoto tests from dark
sky
> >sites for your evaluation.  At this point, I am not impressed with the
film
> >for wide angle, and its green response tends to dilute the red
sensitivity.
> >There are major quality issues with this film as you will see, each roll
> >varied alot, and the color balance changed from roll to roll.  Here are
the
> >results of many hours of work:
> >
> >http://www.psiaz.com/schur/astro/filmimagepages/kontests2.html
> >
> >
> >Comments Appreciated!
> >
> >
> >Clear Skies,
> >
> >Chris Schur
> >Astro: http://www.PSIAZ.com/Schur/astro
> >Robotics: http://www.psiaz.com/schur/astro/roboticsmain.html
>
>
> Philip Perkins
> <pgp@astrocruise.com>
> Wiltshire UK & Luberon France
>
> *** Webcast Movie and Key Events of the 2004 Venus Transit ***
> http://www.astrocruise.com/venus_transit/transit.htm
>
> _______________________________________________
> Astro-Photo mailing list
> Astro-Photo@seds.org
> http://seds.org/mailman/listinfo/astro-photo

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