I am having dewing problems with this camera and my attempts at baking the dessicant have not fully solved the problem. Would it be possible to place the dessicant in a vacuum chamber to remove moisture rather than bake in an oven? Cheers, Phil Sheehan.
Hi Phil, Before going to a vacuum chamber have you inspected the o-ring on the plug? If you are baking for 4 hours in an oven it has to be backed out.
Thanks for your speedy reply Tim! Yes, the o-ring was removed prior to baking. I do image in a very humid climate and my efforts so far have not completely stopped the dewing of the chamber. I use a heater strap on the outside of the fitting to the focuser. I read that our rep here in Australia uses a vacuum chamber type of thing to do the desiccant and I wondered if this was ok for me to try.
Thanks Doug...it is the CCD fogging...had some bad images at our annual Astrofest outing. I use a heater strap around the extension tube from camera to focuser. The camera is performing brilliantly and I am sure the dewing problem is related to my technical incompetence. I am going to try a vacuum chamber for the desiccant and also an Argon gas refill in the CCD chamber. Cheers!
