Artemis CCD - Housing
Home Up Next

 

The Artemis Cam Housing

click to enlarge

Following is a description of the Artemis CCD cam housing.

The housing holds the two PC-boards, a fan, the peltier. Provides a cold chamber and mounting possibilities via a ring adapter.

The adapter have T and M42 dimensions which allow to attach the cam to regular T-thread items and via adapter to 1.25" eyepiece holders and to my set of Canon and M42 SLR lenses.

I decided to apply some yellow paint to the housing - that is.

The peltier is glued to the alu housing with a two component epoxy - the base was sanded and cleaned before. Only the thinnest film of glue is enough. Before I had marked the cold side with a C (just use a 1.5V battery to find out which side gets cold).

Later the CCD will sit on a cold finger on top of the peltier.

The power supply for the peltier is a stepdown regulator which is fed by the 12V main supply. The cam allows to bring the peltier power separate from the rest. A stepdown regulator will not just burn the voltage drop but transforms the voltage to a lower level quite efficiently (80%+) but one has to have it outside the housing due to EMC.

The supplier of the regulator is the German ELV (2-A-Step-Down-Schaltregler, Part-Nr.: 68-193-72  about 16) www.elv.de

Cam assembly 

Also the nosepiece is glued to the main housing, again only a thin layer of epoxy and clean (spiritus) surfaces.

Putting everything together is fairly straight.  

And finally............

This is the first light picture of M45 taken on the day of the first light of the cam using an SLR lens an the icx255 ccd 10sec exposure.


Artemis CCD cam


Painting 'Quack'



Back plate



Pre-assembled



Mounting the peltier



Top view



About to be finished


With lens mounted