Re: [APML] TP woes and questions

[Roland Roberts <roland@astrofoto.org>]

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>>>>> "Tony" == Tony Hallas <tonyhallas@foothill.net> writes:

    Tony> Roland, Let me see if I understood you ... this hypered TP
    Tony> is 2.5 years old??? My guess is that you probably picked up
    Tony> every cosmic ray in the Universe during this time ... the
    Tony> film is probably completely fogged ... and Lumicon has a
    Tony> penchant for hypering on the "heavy" side so the film
    Tony> already had significant hyper fog to start with ... I would
    Tony> definitely develop a small piece to see what you have there.

Speaking on the basis of my PhD in nuclear physics, I can assure you I
missed at least a few cosmic rays :-)

But yeah, it's 2.5 years old.  I have some newer stuff that is only 2
years old.  It's all been in the freezer for that whole time.

I guess once I can clear some space out in my garage, I can try to get
my own hypering kit.  I'm mostly trying to see if I can get anything
from my urban setup here in Brooklyn, and TP + the Wratten 92 seemed
the best bet.  Skies are about mag 4.5 on the *really* good nights,
but typically about mag 4.  And that means sticking near the zenith,
say 45° and higher; certain directions are just out (don't look toward
Manhattan!).

I'll try to do a small piece at several different development times to
see what I can get.  Since 12 minutes was obviously a bit much, I'll
back down to 10, as John Mirtle suggested, and then back to 8 if need
be.  If that doesn't do the trick, I might be back here asking for
someone to hyper some film for me; or maybe I'll try the new Lumicon
to see if a new roll works better.

It should be noted that even when the file was a mere 1-1/2 years old,
I got the same effect; that was 7 min in D-19.  And when it was a mere
couple of months old I got the same effect on a different roll from
the same batch, again 7 min in D-19, but I may have mishandled that
roll, so it's hard to be sure.

Now I need the clouds to go away....

Thanks,

roland
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		       PGP Key ID: 66 BC 3B CD
Roland B. Roberts, PhD                             RL Enterprises
roland@rlenter.com                            6818 Madeline Court
roland@astrofoto.org                           Brooklyn, NY 11220

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