Freeze spray

[Nessy]

From my days of playing with electronics I used to use a can of spray that took the circuit board down to -degrees (very cold). It was non-conductive and used 'live'. Has anyone tried using this stuff on a CCD (or back of) to see if it helps?

[Naz]

I should imagine a good idea in theory, but two problems that I think would make it a no-no.

First, it could cause ice to form and render the image unusable, secondly, the temperature would fluctuate and that may cause further problems.

naz

[Nessy]

Hmmm - good point.

I might try a bit and see what happens. I guess it can't hurt

[Naz]

It shouldn't do any harm, might be surprised,

naz

[Greg]

Trudie...

Having an electronics background..The theory is sound ...

However the practice is flawed...The propelant may damage the CCD..

Reducing the temperature of the ccd will reduce the noise...But using a Coolant spray could damage the chip..

[Nessy]

hmmmm again!

Perhaps if one were to put a heat-sink on the back and spray that then the this would cool the chip by convection rather than direct?

[geppetto]

Used hundreds of tins of that in my time...

Quite a few used for killing wasps in the workshop

Too cold mate....you'll get water condensing out of the air

and your camera will be dripping

[Nessy]

Oh well....back to the drawing board!

At least there are others that think crazy like me :shock:

[Greg]

Talking of crazy ideas...Didn't someone ask about strapping a freezer block to the back of the camera once!