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Status of the SPIRE photometer data processing pipelines during the early phases of the Herschel mission.
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posted on 2023-06-08, 00:02 authored by C. Darren Dowell, Michael Pohlen, Chris Pearson, Matt Griffin, Tanya Lim, Seb OliverSeb Oliver, Anthony Smith, et alWe 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.
History
Publication status
- Published
ISSN
0277786XExternal DOI
Volume
7731Presentation Type
- paper
Event name
Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter WaveEvent location
San Diego, CA; 27 Code 81848Event type
conferenceEvent date
June 2010 through 2 July 2010.ISBN
978-081948221-1Department affiliated with
- Physics and Astronomy Publications
Notes
Published on Proceedings of SPIE - The International Society for Optical Engineering, Volume 7731.Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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