|
I won't dispute Rowlands advice on grounding but will say I have had no problems with lines on my images. Doing some darks as tests will show them if your going to get them. My cold finger is earthed to the sensor board frame. The finger itself is insulated with Plasti-Dip rubber spray paint, on all surfaces except the sensor mating area and the TEC area. I did that to provide a level of electrical and thermal insulation to minimise sweating inside the camera and retain cold for the sensor. From the point where the finger exits the camera it is covered with foam mat type insulation held in place with duct tape.
Consider how you are going to build structural stiffness into the cold finger/heatsink/fan assembly as this will put torque onto the sensor board unless constrained by a physical attachment to the camera or support bracket. I built a trangulated carbon fibre support for mine and it yields a very strong assembly. The photos of the carbon fibre bracket are back in this thread.
|