27 July 2016 ESO adaptive optics NGSD/LGSD detector and camera controller for the E-ELT
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Abstract
This paper presents the development of the ESO prototype detector controller for the Adaptive Optics imager on the E-ELT which is based on the e2v Natural Guide Star Detector (NGSD) and Laser Guide Star Detector (LGSD). Both NGSD and LGSD are prototype detectors aiming at proving the CMOS technology in the context of the requirement for a Large Visible AO WFS Detector for the E-ELT. NGSD is a custom design CMOS array detector of 880×840 pixels organized as 44×42 sub-apertures of 20×20 pixel each. NGSD is exactly 1/4 of the LGSD and therefore it is considered a scaled down demonstrator for the LGSD. The detector controller requirements present important challenges in the design of the electronics due to the low-power, low-noise and high parallel data rate of the detectors involved. The general architecture of the controller, the front-end electronics to drive and read-out the detector along with the camera design are described here. This electronics is based on advanced Xilinx FPGAs.
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Javier Reyes-Moreno, Mark Downing, Nicola Di Lieto, "ESO adaptive optics NGSD/LGSD detector and camera controller for the E-ELT", Proc. SPIE 9909, Adaptive Optics Systems V, 990962 (27 July 2016); doi: 10.1117/12.2232317; https://doi.org/10.1117/12.2232317
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