27 July 2016 Measuring the effective pixel positions for the HARPS3 CCD
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Abstract
We present preliminary results from an experiment designed to measure the effective pixel positions of a CCD to sub-pixel precision. This technique will be used to characterise the 4k x 4k CCD destined for the HARPS-3 spectrograph. The principle of coherent beam interference is used to create intensity fringes along one axis of the CCD. By sweeping the physical parameters of the experiment, the geometry of the fringes can be altered which is used to probe the pixel structure. We also present the limitations of the current experimental set-up and suggest what will be implemented in the future to vastly improve the precision of the measurements.
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Richard D. Hall, Samantha Thompson, Didier Queloz, "Measuring the effective pixel positions for the HARPS3 CCD", Proc. SPIE 9915, High Energy, Optical, and Infrared Detectors for Astronomy VII, 991525 (27 July 2016); doi: 10.1117/12.2232487; https://doi.org/10.1117/12.2232487
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