The Photodetector Array Camera and Spectrometer (PACS) on the Herschel Space Observatory
Journal
Date Issued
2010
Author(s)
Poglitsch, A.
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Waelkens, C.
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Geis, N.
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Feuchtgruber, H.
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Vandenbussche, B.
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Rodriguez, L.
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Krause, O.
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Renotte, E.
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van Hoof, C.
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Saraceno, P.
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Cepa, J.
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Kerschbaum, F.
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Agnèse, P.
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Ali, B.
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Altieri, B.
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Andreani, P.
•
Augueres, J. -L.
•
Balog, Z.
•
Barl, L.
•
Bauer, O. H.
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Belbachir, N.
•
•
Billot, N.
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Boulade, O.
•
Bischof, H.
•
Blommaert, J.
•
Callut, E.
•
Cara, C.
•
Cerulli, R.
•
Cesarsky, D.
•
Contursi, A.
•
Creten, Y.
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De Meester, W.
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Doublier, V.
•
Doumayrou, E.
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Duband, L.
•
Exter, K.
•
Genzel, R.
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Gillis, J. -M.
•
Grözinger, U.
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Henning, T.
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Herreros, J.
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Huygen, R.
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Inguscio, M.
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Jakob, G.
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Jamar, C.
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Jean, C.
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de Jong, J.
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Katterloher, R.
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Kiss, C.
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Klaas, U.
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Lemke, D.
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Lutz, D.
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Madden, S.
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Marquet, B.
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Martignac, J.
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Mazy, A.
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Merken, P.
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Montfort, F.
•
•
Müller, T.
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Nielbock, M.
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Okumura, K.
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Orfei, R.
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Ottensamer, R.
•
•
Popesso, P.
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Putzeys, J.
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Regibo, S.
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Reveret, V.
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Royer, P.
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Sauvage, M.
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Schreiber, J.
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Stegmaier, J.
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Schmitt, D.
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Schubert, J.
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Sturm, E.
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Thiel, M.
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Tofani, G.
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Vavrek, R.
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Wetzstein, M.
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Wieprecht, E.
•
Wiezorrek, E.
Abstract
The Photodetector Array Camera and Spectrometer (PACS) is one of the three science instruments on ESA's far infrared and submillimetre observatory. 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 integral-field spectroscopy and imaging photometry in the 60-210 μm wavelength regime. In photometry mode, it simultaneously images two bands, 60-85 μm or 85-125 μm and 125-210 μm, over a field of view of ~1.75'× 3.5', with close to Nyquist beam sampling in each band. In spectroscopy mode, it images a field of 47” × 47”, resolved into 5×5 pixels, with an instantaneous spectral coverage of ~1500 km s-1 and a spectral resolution of ~175 km s-1. We summarise the design of the instrument, describe observing modes, calibration, and data analysis methods, and present our current assessment of the in-orbit performance of the instrument based on the performance verification tests. PACS is fully operational, and the achieved performance is close to or better than the pre-launch predictions.
Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.
Volume
518
Issue
4
Start page
L2
Issn Identifier
0004-6361
Ads BibCode
2010A&A...518L...2P
Rights
open.access
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