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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 421509.0, MPI für Astronomie / Publikationen_mpia
The Photodetector Array Camera and Spectrometer (PACS) for the Herschel Space Observatory
Authors:Poglitsch, Albrecht; Waelkens, Christoffel; Bauer, Otto H.; Cepa, Jordi; Feuchtgruber, Helmut; Henning, Thomas; van Hoof, Chris; Kerschbaum, Franz; Krause, Oliver; Renotte, Etienne; Rodriguez, Louis; Saraceno, Paolo; Vandenbussche, Bart
Place of Publication:Bellingham, Wash.
Date of Publication (YYYY-MM-DD):2008
Title of Proceedings:Space Telescopes and Instrumentation 2008: Optical, Infrared, and Millimeter
Start Page:701005-701005
End Page:12
Title of Series:SPIE
Volume (in Series):7010
Name of Conference/Meeting:Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series
Review Status:not specified
Audience:Experts Only
Abstract / Description:The Photodetector Array Camera and Spectrometer (PACS) is one of the three science instruments for ESA's far infrared and submillimeter observatory Herschel. It employs two Ge:Ga photoconductor arrays (stressed and unstressed) with 16 × 25 pixels, each, and two filled silicon bolometer arrays with 16 × 32 and 32 × 64 pixels, respectively, to perform imaging line spectroscopy and imaging photometry in the 60 - 210mum wavelength band. In photometry mode, it will simultaneously image two bands, 60 - 85mum or 85 - 125mum and 125 - 210mum, over a field of view of ~ 1.75' × 3.5', with close to Nyquist beam sampling in each band. In spectroscopy mode, it will image a field of ~ 50" × 50", resolved into 5 × 5 pixels, with an instantaneous spectral coverage of ~ 1500 km/s and a spectral resolution of ~ 175 km/s. In both modes the performance is expected to be not far from background-noise limited, with sensitivities (5sigma in 1h) of ~ 4 mJy or 3 - 20 × 10-18W/m2, respectively. We summarize the design of the instrument, describe the observing modes in combination with the telescope pointing modes, report results from instrument level performance tests and calibration of the Flight Model, and present our current prediction of the in-orbit performance of the instrument based on the ground tests.
Comment of the Author/Creator:Date: 2008, August 1, 2008
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://adsabs.harvard.edu/abs/2008SPIE.7010E...3P [ID No:1]
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