Larger S7031-1006S CCD

The Hamamatsu C7041 TEC head with the S7031-906S TEC CCD:


The S7031-1006S CCD we found on ebay was installed in a Tencor head.
I can't find any information on this head: 


The S7031-1006S was removed to be installed on the C7041 head.

This Hamamatsu CCD is the same one that was used on NASA's LADEE 
moon probe to analyze the lunar atmosphere.



A fingerprint was on the CCD window received from ebay seller!:


It was cleaned off with collodion; hopefully without spoiling the AR coating:


Finished the transplant of S7031-1006S into C7041 head without incident.
The photo below shows the smaller tube that sits inside the PVC pipe
to provide light shielding. The tubes are needed to put the CCD
at the correct focal point.


The jumper settings that have to be changed so the head recognizes
the different CCD are shown in the upper left corner.


This (uncalibrated) pararealgar spectrum looks good:

The spectrum only took 2 frames to cover the shown range instead of four. 
That may seem like a small improvement, but for very long exposures 
it will halve the amount of time needed and reduce frame-stitching 
errors that can cause many problems. Note the absence of the 275cm^-1 artefact
seen in a similar spectrum made with the smaller CCD.