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Proceedings Paper

Status of the SPIRE photometer data processing pipelines during the early phases of the Herschel Mission
Author(s): C. Darren Dowell; Michael Pohlen; Chris Pearson; Matt Griffin; Tanya Lim; George J. Bendo; Dominique Benielli; James J. Bock; Pierre Chanial; Dave L. Clements; Luca Conversi; Marc Ferlet; Trevor Fulton; Rene Gastaud; Jason Glenn; Tim Grundy; Steve Guest; Ken J. King; Sarah J. Leeks; Louis Levenson; Nanyao Lu; Huw Morris; Hien Nguyen; Brian O'Halloran; Seb Oliver; Pasquale Panuzzo; Andreas Papageorgiou; Edward Polehampton; Dimitra Rigopoulou; Helene Roussel; Nicola Schneider; Bernhard Schulz; Arnold Schwartz; David L. Shupe; Bruce Sibthorpe; Sunil Sidher; Anthony J. Smith; Bruce M. Swinyard; Markos Trichas; Ivan Valtchanov; Adam L. Woodcraft; C. Kevin Xu; Lijun Zhang
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Paper Abstract

We describe the current state of the ground segment of Herschel-SPIRE photometer data processing, approximately one year into the mission. The SPIRE photometer operates in two modes: scan mapping and chopped point source photometry. For each mode, the basic analysis pipeline - which follows in reverse the effects from the incidence of light on the telescope to the storage of samples from the detector electronics - is essentially the same as described pre-launch. However, the calibration parameters and detailed numerical algorithms have advanced due to the availability of commissioning and early science observations, resulting in reliable pipelines which produce accurate and sensitive photometry and maps at 250, 350, and 500 μm with minimal residual artifacts. We discuss some detailed aspects of the pipelines on the topics of: detection of cosmic ray glitches, linearization of detector response, correction for focal plane temperature drift, subtraction of detector baselines (offsets), absolute calibration, and basic map making. Several of these topics are still under study with the promise of future enhancements to the pipelines.

Paper Details

Date Published: 10 August 2010
PDF: 18 pages
Proc. SPIE 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave, 773136 (10 August 2010); doi: 10.1117/12.858035
Show Author Affiliations
C. Darren Dowell, Jet Propulsion Lab. (United States)
Michael Pohlen, Cardiff Univ. (United Kingdom)
Rutherford Appleton Lab. (United Kingdom)
Chris Pearson, Rutherford Appleton Lab. (United Kingdom)
Institute for Space Imaging Science, Univ. of Lethbridge (United Kingdom)
Matt Griffin, Cardiff Univ. (United Kingdom)
Tanya Lim, Rutherford Appleton Lab. (United Kingdom)
George J. Bendo, Imperial College London (United Kingdom)
Dominique Benielli, Lab. d'Astrophysique de Marseille, CNRS (France)
James J. Bock, Jet Propulsion Lab. (United States)
Pierre Chanial, Service d'Astrophysique, CEA (France)
Imperial College London (United Kingdom)
Dave L. Clements, Imperial College London (United Kingdom)
Luca Conversi, European Space Astronomy Ctr. (Spain)
Marc Ferlet, Rutherford Appleton Lab. (United Kingdom)
Trevor Fulton, Blue Sky Spectroscopy Inc. (Canada)
Rene Gastaud, Service d'Astrophysique, CEA (France)
Jason Glenn, Univ. of Colorado at Boulder (United States)
Tim Grundy, Rutherford Appleton Lab. (United Kingdom)
Steve Guest, Rutherford Appleton Lab. (United Kingdom)
Ken J. King, Rutherford Appleton Lab. (United Kingdom)
Sarah J. Leeks, Rutherford Appleton Lab. (United Kingdom)
Louis Levenson, California Institute of Technology (United States)
Nanyao Lu, NASA Herschel Science Ctr. (United States)
Huw Morris, Rutherford Appleton Lab. (United Kingdom)
Hien Nguyen, Jet Propulsion Lab. (United States)
Brian O'Halloran, Imperial College London (United Kingdom)
Seb Oliver, Astronomy Ctr., Univ. of Sussex (United Kingdom)
Pasquale Panuzzo, Service d'Astrophysique, CEA (France)
Andreas Papageorgiou, Cardiff Univ. (United Kingdom)
Edward Polehampton, Rutherford Appleton Lab. (United Kingdom)
Institute for Space Imaging Science, Univ. of Lethbridge (United Kingdom)
Dimitra Rigopoulou, Rutherford Appleton Lab. (United Kingdom)
Helene Roussel, Institut d'Astrophysique de Paris, CNRS, Univ. Pierre et Marie Curie (France)
Nicola Schneider, Service d'Astrophysique, CEA (France)
Bernhard Schulz, NASA Herschel Science Ctr. (United States)
Arnold Schwartz, NASA Herschel Science Ctr. (United States)
David L. Shupe, NASA Herschel Science Ctr. (United States)
Bruce Sibthorpe, UK Astronomy Technology Ctr. (United Kingdom)
Sunil Sidher, Rutherford Appleton Lab. (United Kingdom)
Anthony J. Smith, Astronomy Ctr., Univ. of Sussex (United Kingdom)
Bruce M. Swinyard, Rutherford Appleton Lab. (United Kingdom)
Markos Trichas, Imperial College London (United Kingdom)
Ivan Valtchanov, European Space Astronomy Ctr. (Spain)
Adam L. Woodcraft, Institute for Astronomy, Univ. of Edinburgh (United Kingdom)
C. Kevin Xu, NASA Herschel Science Ctr. (United States)
Lijun Zhang, NASA Herschel Science Ctr. (United States)

Published in SPIE Proceedings Vol. 7731:
Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave
Jacobus M. Oschmann Jr.; Mark C. Clampin; Howard A. MacEwen, Editor(s)

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