Optical detector systems of UVES: the echelle spectrograph for the UT2 Kueyen Telescope at the ESO Paranal Observatory

Reinhold J. Dorn; James W. Beletic; Cyril Cavadore; Jean-Luis Lizon

doi:10.1117/12.395492

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16 August 2000 Optical detector systems of UVES: the echelle spectrograph for the UT2 Kueyen Telescope at the ESO Paranal Observatory

Reinhold J. Dorn, James W. Beletic, Cyril Cavadore, Jean-Luis Lizon

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Proceedings Volume 4008, Optical and IR Telescope Instrumentation and Detectors; (2000) https://doi.org/10.1117/12.395492
Event: Astronomical Telescopes and Instrumentation, 2000, Munich, Germany

Abstract

This paper presents the design, construction and performance parameters for the optical detector systems for UVES, the echelle spectrograph for the UT2 Kueyen Telescope at the ESO Paranal. A general overview at system level with a description of the individual components is also given. Emphasis is given on the CCD detectors and their performance. The two rams are equipped with large science CCD detectors, one single chip in the blue arm and a mosaic of two in the red. The blue CCD is a 2K by 4K, 15 micrometers pixel size thinned EEV CCD-44. The mosaic in the red arm is made of an EEV chip of the same type and an MIT/LL CCID-20 chip, which features a higher NIR QE and reduce fringing for the redder part of the spectral range. The read noise archived with the CCDs at the telescope is less than 2 electrons for the EEV CCDs and less than 3 electrons for the MIT/LL CCD at a readout speed of 50 kpixel/sec/port. The system s offer a variety of readout modes, binning options and readout speeds up to 625 kilopixel per second per port with linearity variations better than 1 percent peak to peak at a dark current level of around 0.5 electrons/pixel/hour.

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Reinhold J. Dorn, James W. Beletic, Cyril Cavadore, and Jean-Luis Lizon "Optical detector systems of UVES: the echelle spectrograph for the UT2 Kueyen Telescope at the ESO Paranal Observatory", Proc. SPIE 4008, Optical and IR Telescope Instrumentation and Detectors, (16 August 2000); https://doi.org/10.1117/12.395492

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