RE: [APML] recommendations for development of tech pan

["Thom Iwancio" <tiwancio@sc.rr.com>]

Richard,
	I just went through some of this myself and also found Michael
Covington’s page to be a treasure trove of HC-110 information.  Although
I have yet to get a hypered Tech Pan shot worthy of posting, I can tell
you the convenience and consistency of using a syrup based developer to
mix a batch at a time is outstanding.  It has become my developer of
choice for all B&W films.
I have successfully processed daylight images with Tech Pan, Tri-X,
Plus-X, T-Max and Pan-F, all with HC.

There is a pretty wide tolerance with the other baths, but try to keep
the developer temp and time as consistent as possible and your roll to
roll results should be just as consistent.

12 minutes @ 68 F gave me super results on an exquisitely “trailed” shot
of M8.  You know, it is always something……...

Thom Iwancio
Elgin, SC
www.machunter.org
home.sc.rr.com/thomiwancio


-----Original Message-----
From: astro-photo-bounces@seds.org [mailto:astro-photo-bounces@seds.org]
On Behalf Of Kirk Carbo
Sent: Monday, September 15, 2003 3:25 PM
To: 'Richard Crisp'; 'Discussion of Film Astrophotography'
Subject: RE: [APML] recommendations for development of tech pan

I use Kodak HC110 developer dilution B for eight and a half minutes at
75ºF.  That's the equivalent of 12 minutes at 68ºF.  HC110 produces a
little less contrast and speed than D19.  I like the developer because
it is a liquid syrup and is very easy to mix for one shot use.  D19 is a
powder and the entire packet has to mixed so its' useful shelf life is
less.  Powdered developers are also difficult to completely dissolve and
the little left over grains add to the clean up work on the negatives. 
The HC110 is just more convenient for me to use.  Michael Covington has
an excellent article on his web site and he also covers the topic in his
book, Astrophotography for the Amateur.  The web address for the article
is:
http://www.covingtoninnovations.com/hc110/index.html
 
Kirk Carbo
-----Original Message-----
From: Richard Crisp [mailto:rdcrisp@earthlink.net]
Sent: Monday, September 15, 2003 1:53 PM
To: Discussion of Film Astrophotography
Subject: [APML] recommendations for development of tech pan
what is the consensus around here about how to develop tech pan 2415?
 
I am guessing nearly everyone does their own, but which developer, what
temp and for how long for the develop etc?
 
thanks
Richard
 



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