An integrated optimal estimation approach to Spitzer Space Telescope focal plane survey

David S. Bayard; Bryan H. Kang; Paul B. Brugarolas; Dhemetrios Boussalis

doi:10.1117/12.552394

12 October 2004 An integrated optimal estimation approach to Spitzer Space Telescope focal plane survey

David S. Bayard, Bryan H. Kang, Paul B. Brugarolas, Dhemetrios Boussalis

Proceedings Volume 5487, Optical, Infrared, and Millimeter Space Telescopes; (2004) https://doi.org/10.1117/12.552394
Event: SPIE Astronomical Telescopes + Instrumentation, 2004, Glasgow, United Kingdom

Abstract

This paper discusses an accurate and efficient method for focal plane survey that was used for the Spitzer Space Telescope. The approach is based on using a high-order 37-state Instrument Pointing Frame (IPF) Kalman filter that combines both engineering parameters and science parameters into a single filter formulation. In this approach, engineering parameters such as pointing alignments, thermomechanical drift and gyro drifts are estimated along with science parameters such as plate scales and optical distortions. This integrated approach has many advantages compared to estimating the engineering and science parameters separately. The resulting focal plane survey approach is applicable to a diverse range of science instruments such as imaging cameras, spectroscopy slits, and scanning-type arrays alike. The paper will summarize results from applying the IPF Kalman filter to calibrating the Spitzer Space Telescope focal plane, containing the MIPS, IRAC, and the IRS science instrument arrays.

Citation Download Citation

David S. Bayard, Bryan H. Kang, Paul B. Brugarolas, and Dhemetrios Boussalis "An integrated optimal estimation approach to Spitzer Space Telescope focal plane survey", Proc. SPIE 5487, Optical, Infrared, and Millimeter Space Telescopes, (12 October 2004); https://doi.org/10.1117/12.552394

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