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Proceedings Paper

Temporal optical behavior of HST: focus, coma, and astigmatism history
Author(s): Matthew D. Lallo; Russell B. Makidon; Stefano Casertano; John E. Krist
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Paper Abstract

The focus of the Hubble Space Telescope (HST) has been monitored throughout the life of the observatory primarily by phase retrieval techniques. This method generates and fits model Point Spread Functions (PSFs) to nearly in-focus stellar images to solve for coefficients of the Zernike polynomials describing focus, and often coma and astigmatism. Here, we discuss what these data from the ongoing monitoring strategies and special observations tell us about modes and timescales observed in HST optical variations.

Paper Details

Date Published: 30 June 2006
PDF: 12 pages
Proc. SPIE 6270, Observatory Operations: Strategies, Processes, and Systems, 62701N (30 June 2006); doi: 10.1117/12.672040
Show Author Affiliations
Matthew D. Lallo, Space Telescope Science Institute (United States)
Russell B. Makidon, Space Telescope Science Institute (United States)
Stefano Casertano, Space Telescope Science Institute (United States)
John E. Krist, Jet Propulsion Lab. (United States)


Published in SPIE Proceedings Vol. 6270:
Observatory Operations: Strategies, Processes, and Systems
David R. Silva; Rodger E. Doxsey, Editor(s)

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