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Proceedings Paper

Jovian Planet Finder optical system
Author(s): John E. Krist; Mark Clampin; Larry Petro; Robert A. Woodruff; Holland C. Ford; Garth D. Illingworth; Christ Ftaclas
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Paper Abstract

The Jovian Planet Finder (JPF) is a proposed NASA MIDEX mission to place a highly optimized coronagraphic telescope on the International Space Station (ISS) to image Jupiter-like planets around nearby stars. The optical system is an off-axis, unobscured telescope with a 1.5 m primary mirror. A classical Lyot coronagraph with apodized occulting spots is used to reduce diffracted light from the central star. In order to provide the necessary contrast for detection of a planet, scattered light from mid-spatial-frequency errors is reduced by using super-smooth optics. Recent advances in polishing optics for extreme-ultraviolet lithography have shown that a factor of >30 reduction in midfrequency errors relative to those in the Hubble Space Telescope is possible (corresponding to a reduction in scattered light of nearly 1000x). The low level of scattered and diffracted light, together with a novel utilization of field rotation introduced by the alt-azimuth ISS telescope mounting, will provide a relatively low-cost facility for not only imaging extrasolar planets, but also circumstellar disks, host galaxies of quasars, and low-mass substellar companions such as brown dwarfs.

Paper Details

Date Published: 3 March 2003
PDF: 7 pages
Proc. SPIE 4860, High-Contrast Imaging for Exo-Planet Detection, (3 March 2003); doi: 10.1117/12.457838
Show Author Affiliations
John E. Krist, Space Telescope Science Institute (United States)
Mark Clampin, Space Telescope Science Institute (United States)
Larry Petro, Space Telescope Science Institute (United States)
Robert A. Woodruff, Boeing-SVS, Inc. (United States)
Holland C. Ford, John Hopkins Univ. (United States)
Garth D. Illingworth, Univ. of California/Santa Cruz (United States)
Christ Ftaclas, Univ. of Hawaii (United States)

Published in SPIE Proceedings Vol. 4860:
High-Contrast Imaging for Exo-Planet Detection
Alfred B. Schultz; Richard G. Lyon, Editor(s)

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