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

presentation
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 al
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.

History

Publication status

  • Published

ISSN

0277786X

Volume

7731

Presentation Type

  • paper

Event name

Space Telescopes and Instrumentation 2010: Optical, Infrared, and Millimeter Wave

Event location

San Diego, CA; 27 Code 81848

Event type

conference

Event date

June 2010 through 2 July 2010.

ISBN

978-081948221-1

Department 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

2012-02-06

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