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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 308613.0, MPI für Astronomie / Publikationen_mpia
The photodetector array camera and spectrometer (PACS) for the Herschel Space Observatory
Authors:Poglitsch, A.; Waelkens, C.; Bauer, O. H.; Cepa, J.; Feuchtgruber, H.; Henning, T.; van Hoof, C.; Kerschbaum, F.; Lemke, D.; Renotte, E.; Rodriguez, L.; Saraceno, P.; Vandenbussche, B.
Date of Publication (YYYY-MM-DD):2006
Title of Proceedings:Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter
Start Page:62650B
Volume (in Series):6265
Audience:Not Specified
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 85-130mum and 130-210mum, over a field of view of ~ 1.75' × 3.5', with full 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 and its subunits, describe the observing modes in combination with the telescope pointing modes, report results from instrument level performance tests of the Qualification Model, and present our current prediction of the in-orbit performance of the instrument based on tests done at subunit level.
Comment of the Author/Creator:Date: 2006, July 1, 2006
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Astronomie
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