Re: [APML] Tech Pan developing

["Jim Janusz" <jjanusz@dc.rr.com>]

Hi Garth,

Yes, that is what I used for the 4x5 sheets.  I did not use trays, I 
followed Brad Wallace's advice and used a Jobo Processor or at least a Jobo 
4x5 tank and a roller table.  4x5 is very susceptible to uneven developing 
and the Jobo rotary process does the best job.  It also keeps the 
temperature even throughout the process.

I did try a dip tank and did not like the results so I quickly went Jobo.

Clear Skies

Jim


----- Original Message ----- 
From: <gbuckles@widefieldastrophotography.com>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Tuesday, May 03, 2005 2:48 PM
Subject: Re: [APML] Tech Pan developing


> Jim,
>
> Is that the HC-110 formula and time you use for 4X5 sheets? And do you use
> trays to develop your 4x5 Tech Pan?
>
> Any insights would definitely be appreciated.
>
> Garth
>
>
>
>
>
>
>
>
>> Hi Jason and Scott,
>>
>> If you want to mix HC-110 in small batches here are my measurements which
>> have worked well for me.
>>
>>  If you mix HC-110 in small batches mix 1 oz of developer to 31 ozs of
>> water
>> to make 32 ozs of developer. Or, to make 650 ml mix 20 ml of dev. and 630
>> ml
>> of water.  Be careful with the instructions on the HC as it's to make a
>> stock solution not a working solution.  Sock solutions are meant to be
>> diluted with water before use.  My system makes developer ready to use.
>> You
>> can use the proportions to make different amounts.
>>
>> I normally use 10 minutes but it really depends on the hyper fog on your
>> film.
>>
>> Jim
>>
>>
>>
>> ----- Original Message -----
>> From: "Lane, Jason R" <jason.lane@navy.mil>
>> To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
>> Sent: Tuesday, May 03, 2005 11:13 AM
>> Subject: RE: [APML] Tech Pan developing
>>
>>
>> Hi Scott,
>>
>> I just bought some HC110 to try as well, and the guy at OPT figured I
>> ought
>> to start with dilution B and a development time between 8-12 minutes and
>> experiment from there.
>>
>> http://www.kodak.com/global/en/professional/support/techPubs/p255/p255.jhtml#13
>>
>> Hope this helps,
>> Jason
>>
>> -----Original Message-----
>> From: astro-photo-bounces@seds.org
>> [mailto:astro-photo-bounces@seds.org]On Behalf Of Scott Hammonds
>> Sent: Tuesday, May 03, 2005 8:54 AM
>> To: 'Discussion of Film Astrophotography'
>> Subject: [APML] Tech Pan developing
>>
>>
>> If someone on the list is using or has used HC110 developer for Tech Pan
>> could you please tell me what working solution you are using and time for
>> developing. I am currently using D19 and want to try HC110
>>
>> Thanks,
>> Scott Hammonds
>> www.creatorsview.com
>>
>>
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