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Re: [APML] Humidity effects on E200

Scott,

Thanks for the info!

I took the part numbers to my local welding supply shop and there were able to get info on them.  I will hopefully have them by Thursday - just in time for my first astrophoto trip of the year.

I ended up having a camera shop drill an extra hole in my 6x7 body.  The one is quite old - I doubt I would ever want to sell it, so what the heck!  As for my Nikons, they are too nice.  I had also considered drilling through an old back.  I'm glad to hear that worked out for you.  I will probably go that route assuming I can find some old backs.

Thanks again,
Mike

"R. Scott Ireland" wrote:

 Michael,I drilled throught the camera back of my Nkon F3/T's.  I purchased spare backs, so I keep the original backs untouched and have the N2 purge backs to use for astrophotography.  This keeps the tripod socket intact and allows for any type of lens/telescope/tripod combination to be used.My "exact" parts are as follows:20 psi regulator - Uniweld Products R1559 Nitrogen RegulatorLow-flow flowmeter and 1/4" to 1/8" adapter kit - CONCOA (Controls Corporation of America) purge meter; model #CON5661001.  Adapter kit model #CON5650001.Go to your local welding supply store and you should be able to get what you need there.Scott

website:  http://www.rsiphotos.com/
email:  ireland@gate.net

-----Original Message-----
From: owner-astro-photo@seds.org [mailto:owner-astro-photo@seds.org]On Behalf Of Michael Greger
Sent: Tuesday, April 30, 2002 11:44 PM
To: astro-photo@seds.org
Subject: Re: [APML] Humidity effects on E200
 
Monte, Others,

I have noticed the same thing with E200...  I shot 5 days worth of piggyback shots last year at the Oregon Star Party and all but one came out with a horrible green background :(

I've experimented with covering the camera with plastic bags full of desiccant.  It seemed to  help.  One with desiccant and one without.  The results were pretty telling.

But, I've been wanting to come up with a nitrogen purge solution.  I know that some of you have drilled through the tripod socket of your Pentax 6x7's and Nikon F2's.  I really hate to do this for two reasons:  1) I have pretty nice cameras and 2) This solution does not seem to work for piggyback since I can no longer use the tripod socket!

Monte, you said that you put a hole in the "accessory socket" in the rear of the camera.  Do you mean the smaller, non-threaded hole?  Or, is everyone using the tripod socket and just not purging for piggybacks?

I also have an FSQ106 and have considered drilling holes in the camera adapters.  The CA-35 is not horribly expensive so I could see doing that.  The adapter for the P67 is expensive, but I'd still rather wreck it than my camera!  Has anyone tried this approach?  OK, this still doesn't help piggyback...

And now, the other question.  I am no expert on regulators.  Can anyone out there recommend *exact* parts (or at least where I could look for regulators - I have no idea where to start) that I could use to regulate the gas flow from a high-pressure cylinder?

Thanks,
Mike

Monte Wilson wrote:

Hi guys,           I used a roll of E200 with a Tak FSQ-106 and a 67 Pentax. It worked well with the gas being put into the body of the scope. I replaced one of the screws used to hold the finder scope with a customised hollow one and flowed the gas through it. It worked very well and I didn't have to alter the Tak in any permanent way.

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