Calibration trending in the Spitzer beyond era

Patrick J. Lowrance; Jessica E. Krick; Jim G. Ingalls; Seppo Laine; Sean J. Carey; William Glaccum; Joseph L. Hora; Carl Grillmair

doi:10.1117/12.2313953

10 July 2018 Calibration trending in the Spitzer beyond era

Patrick J. Lowrance, Jessica E. Krick, Jim G. Ingalls, Seppo Laine, Sean J. Carey, William Glaccum, Joseph L. Hora, Carl Grillmair

Author Affiliations +

Proceedings Volume 10704, Observatory Operations: Strategies, Processes, and Systems VII; 1070427 (2018) https://doi.org/10.1117/12.2313953
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The Spitzer Space Telescope currently operates in the "Beyond Era", over nine years past an original cryogenic mission. As the astronomy community continues to advance scientific boundaries and push beyond original specifications, the stability of the Infrared Array Camera (IRAC) instrument is paramount. The Instrument Team (IST) monitors the pointing accuracy, temperature, and calibration and provides the information in a timely manner to observers. The IRAC IST created a calibration trending web page, available to the general astronomy community, where the team posts updates of three most pertinent scientific stability measures of the IRAC data: calibration, bias, and bad pixels. In addition, photometry and telescope properties from all the staring observations (>1500 as of April 2018) are trended to examine correlations with changes in the age or thermal properties of the telescope. A long, well-sampled baseline established by consistent monitoring outside anomalies and space weather events allows even the smallest changes to be detected.

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Citation Download Citation

Patrick J. Lowrance, Jessica E. Krick, Jim G. Ingalls, Seppo Laine, Sean J. Carey, William Glaccum, Joseph L. Hora, and Carl Grillmair "Calibration trending in the Spitzer beyond era", Proc. SPIE 10704, Observatory Operations: Strategies, Processes, and Systems VII, 1070427 (10 July 2018); https://doi.org/10.1117/12.2313953

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