#21  
Old 30-04-2012, 12:09 PM
Enrique
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It is easy to solve it. Look at the QHY11 Center/Tilt adapter. It has two air sockets. I just connected the pumps to them. I made a 3rd socket so I could pump air from 3 directions. Last night the CCD was at -25 with no issues. The roof of the observatory was dripping lots of water from the dew. The camera was fine.

The pumps costs about $15 each.

Regards,

Enrique

http://www.qhyccd.com/images/adjust%...015%2016_2.JPG
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  #22  
Old 30-04-2012, 01:00 PM
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Gama
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Enrique is correct.
This port on the adapter is to allow air to blow across the front glass of the camera to allow use in long extended operation, and very humid conditions.
QHY also has pumps for this sort of work regarless of manufacturer.

Hey Enrique, you may want to blow up that rubber horsey from the swimming pool and place it in your observatory. With all that dew, your gear may float away..

Theo
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  #23  
Old 30-04-2012, 01:03 PM
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Tandum (Robin)
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Cheers guys, I get the picture now.
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  #24  
Old 30-04-2012, 04:17 PM
Enrique
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Theo/Robin:

There is so much dew that I have to use a "ShamWow" to dry the roof before I close it to avoid the watter from dripping on top of the telescope. I would say that pumping air to the front of the camera is a good solution. It is working for me.

Regards,

Enrique
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