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Modified Philips |
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See also: http://astro.ai-software.com The webcam will be modified to make long exposures.
It is necessary to place a extra IC (74HC00) For cooling, the CCD will be disassemble of the circuit board and replaced on aluminium cool block |
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The CCD circuit board is removed of the 'egg'. The CCD complete disassemble of the circuit board.
The other 'copper' board will be the new board for the CCD.
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Here's a shot of the CCD with the ribbon cables soldered to its leads. The fan (from an old PC) will be used to remove the heat.
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The Peltier device, an electric cooler, I bought doesn’t’ work. I did open it to see the inside.
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The Peltier device must pierce the cabinet cover. To the other side, the hot site will be placed the fan.
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Here you see an aluminium block with the CCD. Ito the Block a temperature device. The white plate with the red ring will be a 'anti condense-chamber’. |
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Cooling
brings condense. The CCD can be frozen. Therefore I made a camber over the CCD. The tubes on both sides makes it possible to allow inert gas into the chamber. The tubes can be closed by a o-ring and screws. The camber will be closed witch the cable-swivel. The swivel will covert with a UV-block-filter |
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Testing the cooling |
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The camera is almost ready. Only placing in the cabinet remains
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Camera ready to use The lens mount is a Olympus because I have the lensesThe project was marvellous, a Learn a lot of CCD camera’s but the camera did not works well. I think the ribbon cables causes interferential and gives a bad result. I made a second camera on a other way.
© 2007 Gerard van den Braak |
