Re: [APML] Dry Air Purge Rate for hypered film?

[steve banbury <banburys@sonic.net>]

Thanks Robert!

Robert Reeves wrote:

>
> 10-4 on the nitrogen tanks being a hassle.  I could do it when I was younger,
> but one day I just got old.  Suddenly the thing seemed to weigh a ton.
>
> As far as the flow from the aquarium pump through the camera, you can throttle
> it down a bit more using the needle valves used to control air flow into
> aquariums.  They are cheap and work fine.  To guage the amount of output  flow
> just see how long it takes to displace the water in a jar of known capacity.

I did it with an empty plastic bag--thats how I determined a rate of about 0.04
cfm. Of course I have no idea what the leak rate into the camera is, but its a
start!

As far as the nitrogen tank is concerned--I got out of scuba diving because it
was too hardware intensive--and now look at the mess I've gotten into in my
later years!

:^} Steve

_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo