Quote:
Originally Posted by mill
While you are at it, check for black residue between the pins of the ccd chip.
I have had black pictures a couple of times with a value of the pedestal setting (100 for me).
After cleaning with a brush and acetone i had normal pictures again.
One tip, when finished cleaning, look at the wires of the temperature sensor.
When the wires touch each other you will have a VERY low temperature reading that even Hubble would be jealous of 
It is easy to move those wires when cleaning the pins in the left hand bottom corner of the chip.
I am now designing a way to fill the ccd chamber with Argon from the outside thru a one way fill design.
Also having double sided tape in the chamber will keep a lot of dust off the chip because it will get stuck on the tape.
Double sided tape is also a good way to stick a small desiccant strip in the chamber.
Just some tips to think about.
When i have found a easy way to flush the chamber i will publish this here in a separate post.
Martin.
Martin. |
Martin,
Does your camera have the dessicant port? I believe this will be the answer to my problems if Theo is able to source a replacement nosepiece with the dessicant port as this will allow argon purging without removing the nosepiece and failing that I can fit an external dessicant chamber and regularly recharge it.