Quote:
Originally Posted by SuperG
I'm a little confused here. I expect that Flooding the camera compartments with argon will only reduce air for a very short period of time. I also doubt that any amateur camera has gas-tight seals. I would then think the argon would probably leak within an hour to be replaced by air. If it is to purge the camera parts of moisture then maybe that's enough in conjunction with a desiccant.
I'm not meaning to be a nay-sayer but as I say to a lot of people. If it works then don't change it.
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Power ports, usb ports and din plugs on the camera bodies are usually pass through and not sealed but I think you can assume once the plugs are in then the air gap is negligible. Unless the camera compartement being 10s of degrees under ambient is enough to create a pressure differential that would make a small vaccuum to suck ambient air in? Is that what you reckon could happen? I purge my cameras for one imaging session or sometime a few nights and haven't had any issue between recharges but I've never explicitly measured anything so I don't know how long it'd last. I did 3 nights with the QHY8 once with no dewing or icing.