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Proceedings Paper

Pointing effects and their consequences for Spitzer IRAC exoplanet observations
Author(s): Carl J. Grillmair; Sean J. Carey; John R. Stauffer; Mark E. Fisher; Ryan Olds; James G. Ingalls; Jessica E. Krick; William J. Glaccum; Seppo Laine; Patrick J. Lowrance; Jason A. Surace
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Paper Abstract

Spitzer observations of exoplanets routinely yield accuracies of better than one part in 10,000. However, there remain a number of issues that limit the attainable precision, particularly for long duration observations. These include initial pointing inaccuracies, pointing wobble, initial target drift, long-term pointing drifts, and low and high frequency jitter. Coupled with small scale, intrapixel sensitivity variations, all of these pointing issues have the potential to produce significant, correlated photometric noise. We examine each of these issues in turn, discussing their suspected causes and consequences, and describing possible and planned mitigation techniques.

Paper Details

Date Published: 13 September 2012
PDF: 9 pages
Proc. SPIE 8448, Observatory Operations: Strategies, Processes, and Systems IV, 84481I (13 September 2012); doi: 10.1117/12.927191
Show Author Affiliations
Carl J. Grillmair, Spitzer Science Ctr., California Institute of Technology (United States)
Sean J. Carey, Spitzer Science Ctr., California Institute of Technology (United States)
John R. Stauffer, Spitzer Science Ctr., California Institute of Technology (United States)
Mark E. Fisher, Lockheed Martin Space Systems Co. (United States)
Ryan Olds, Lockheed Martin Space Systems Co. (United States)
James G. Ingalls, Spitzer Science Ctr., California Institute of Technology (United States)
Jessica E. Krick, Spitzer Science Ctr., California Institute of Technology (United States)
William J. Glaccum, Spitzer Science Ctr., California Institute of Technology (United States)
Seppo Laine, Spitzer Science Ctr., California Institute of Technology (United States)
Patrick J. Lowrance, Spitzer Science Ctr., California Institute of Technology (United States)
Jason A. Surace, Spitzer Science Ctr., California Institute of Technology (United States)


Published in SPIE Proceedings Vol. 8448:
Observatory Operations: Strategies, Processes, and Systems IV
Alison B. Peck; Robert L. Seaman; Fernando Comeron, Editor(s)

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