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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 731907.0, MPI für Astronomie / Publikationen_mpia
GRAVITY detector systems
Authors:Mehrgan, L. H.; Finger, G.; Eisenhauer, F.; Panduro, J.
Place of Publication:Bellingham, Wash.
Publisher:SPIE
Date of Publication (YYYY-MM-DD):2016
Audience:Not Specified
Abstract / Description:GRAVITY is a second generation instrument for the VLT Interferometer, designed for high-precision narrow-angle astrometry and phase-referenced interferometric imaging in the K-band. It will combine the AO corrected beams of the four VLT telescopes. In total, the GRAVITY instrument uses five eAPD detectors four for the infrared wavefront sensors of each telescope and one for the fringe tracker. In addition two Hawaii2RG arrays are installed, one for the acquisition camera and one for the spectrometer. The SAPHIRA eAPD array is a newly developed near-infrared detector with sub-electron noise performance at frame rates > 1Kfps. For all seven detectors the ESO common controller, NGC, is used. This paper presents an overview and comparison of GRAVITY detector systems and their final performances at the telescope
External Publication Status:published
Document Type:Other
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/abs/2016SPIE.9907E..2FM
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