Re: [APML] TP development results

[Grant <GB1029@inter-linc.net>]

Thanks everyone for the tips & warnings. If I develop any
xtra fingers, I'll be sure and donate them to science...

Grant


At 08:11 AM 3/31/02 -0800, you wrote:

>Grant,
>I have also tried splitting and saving the unused D-19 powder, but I found
>that putting the powder in plastic zip bags doesn't work well.  I measured
>the portions on a gram scale, but decided that isn't necessary because the
>mixture of D-19 can tolerate a wide range.  I use D-19 diluted 50% with
>water and develop for 10 minutes (recommended by Kodak for max contrast).
>
>The storage problem I found was that it's impossible to get the air out of
>the bag, and air/moisture ruins the chemicals.  My D-19 turned tan, then
>brown over a couple months.  The effect was that the developer mixed with
>stored powder looses its anti-fog capability - even after only one month
>storage in plastic, with white powder.
>
>Since D-19 is relativily cheap, I now mix a portion and use it within a week
>or so. Then throw out everything left.  Fresh developer is the only way to
>go.
>Don
>
> > Speaking of D19.. I bought a gallons worth of powder.  And
> > I obviously don't want to mix all of it up.  Am I ok to just eyeball
> > out 4 equal piles or should I grab the digital scale from work?
> >       The warnings on the D19 package would make one believe it
> > was shipped straight from a nuclear facility.  Which leads me
> > to my next question.  How should I store the remaining unmixed
> > powder?  Will ziplock baggies stored in a dark box be sufficient?
> > Or will the D19 melt through the baggies!?
> >
> > Grant
> >
> > At 10:47 PM 3/29/02 -0700, you wrote:
> > >Grant;
> > >     Don't be afraid to shoot groups of galaxies, such as M59-60, M84-86,
> > >M95-96, NGC4656-4631, etc. You may only have 610mm, but a sharply focused
> > >and well guided tech pan shot will pick up more detail than you might
> > >expect. Try it, you might like it. :-) Just don't forget to switch back
>to
> > >D19......
> > >
> > >John Mirtle
> > >Calgary, Ab. Canada
> > >
> > >----- Original Message -----
> > >From: "Grant" <GB1029@inter-linc.net>
> > >To: <astro-photo@seds.org>
> > >Sent: Friday, March 29, 2002 10:48 AM
> > >Subject: Re: [APML] TP development results
> > >
> > >
> > > > Brian,
> > > >
> > > >  >What you gonna shoot at first?
> > > >
> > > > Well.. I'm not sure yet.  At the moment, I'm
> > > > limited to 610mm FL.  And as all of us short
> > > > FL guys know, this time of the year stinks for wide
> > > > angle.  Some nebulosity would be ideal.. but I'll have
> > > > to pull an all nighter and catch the milky way before sunrise.
> > > > M13 is slowly coming back around, however.  Might be my best bet.  Or
>I
> > >could
> > > > try some of the larger galaxies...M81/82  or the trio. Any
>suggestions?
> > > >
> > > > Grant
> > > >
> > > >
> > > > --  APML Archives at <http://astro.umsystem.edu/apml/>  ---
> > > >              Unsubscribe at <majordomo@seds.org>
> > >
> > >
> > >--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
> > >              Unsubscribe at <majordomo@seds.org>
> >
> >
> > --  APML Archives at <http://astro.umsystem.edu/apml/>  ---
> >              Unsubscribe at <majordomo@seds.org>
> >
>
>
>
>--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
>              Unsubscribe at <majordomo@seds.org>


--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
             Unsubscribe at <majordomo@seds.org>