Status of the SPIRE photometer data processing pipelines during the early phases of the Herschel Mission

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

doi:10.1117/12.858035

10 August 2010 Status of the SPIRE photometer data processing pipelines during the early phases of the Herschel Mission

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

Author Affiliations +

Proceedings Volume 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave; 773136 (2010) https://doi.org/10.1117/12.858035
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

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.

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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, and Lijun Zhang "Status of the SPIRE photometer data processing pipelines during the early phases of the Herschel Mission", Proc. SPIE 7731, Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave, 773136 (10 August 2010); https://doi.org/10.1117/12.858035

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