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Proceedings Paper

Detector upgrade for FLAMES: GIRAFFE gets red eyes
Author(s): Claudio Melo; Mark Downing; Paul Jorden; Luca Pasquini; Sebastian Deiries; Andrew Kelt; Dominique Naef; Reinhard Hanuschik; Ralf Palsa; Roberto Castillo; Eduardo Peña; Eduardo Bendek; Mark Gieles
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Paper Abstract

GIRAFFE is an intermediate resolution spectrograph covering a wavelength range from 360-930nm and fed by optical fibers as a part of FLAMES, the multi-object fiber facility mounted at the ESO VLT Kueyen. For some time we sought a new detector for GIRAFFE spectrograph to boost the instrument's red QE (Quantum Efficiency) capabilities, while still retaining very good blue response. We aimed also at reducing the strong fringing present in the red spectra. The adopted solution was an e2v custom 2-layer AR (Anti-Reflection) coated Deep Depletion CCD44-82 CCD. This device was made in a new e2v Technologies AR coating plant and delivered to ESO in mid 2007 with performance that matches predictions. The new CCD was commissioned in May 2008. Here we report on the results.

Paper Details

Date Published: 9 July 2008
PDF: 11 pages
Proc. SPIE 7014, Ground-based and Airborne Instrumentation for Astronomy II, 70143B (9 July 2008);
Show Author Affiliations
Claudio Melo, European Southern Observatory (Germany)
Mark Downing, European Southern Observatory (Germany)
Paul Jorden, e2v technologies (United Kingdom)
Luca Pasquini, European Southern Observatory (Germany)
Sebastian Deiries, European Southern Observatory (Germany)
Andrew Kelt, e2v technologies (United Kingdom)
Dominique Naef, European Southern Observatory (Chile)
Reinhard Hanuschik, European Southern Observatory (Germany)
Ralf Palsa, European Southern Observatory (Germany)
Roberto Castillo, European Southern Observatory (Chile)
Eduardo Peña, European Southern Observatory (Chile)
Eduardo Bendek, European Southern Observatory (Chile)
Mark Gieles, European Southern Observatory (Chile)

Published in SPIE Proceedings Vol. 7014:
Ground-based and Airborne Instrumentation for Astronomy II
Ian S. McLean; Mark M. Casali, Editor(s)

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