AAS 200th meeting, Albuquerque, NM, June 2002
Session 12. Planets and Comets
Display, Monday, June 3, 2002, 9:20am-6:30pm, SW Exhibit Hall

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[12.04] Jovian Planet Finder Wavefront Correction

L. Petro, M. Clampin, J. Krist (STScI), R. Woodruff (Boeing SVS), T. Varlese, T. Valle (BATC), H. Ford (JHU), G. Illingworth (UCO Lick), C. Ftaclas (IfA), J. Nelson (UCO Lick), P. Sullivan (NASA's GSFC), D. Bajuk, J. Kestner (ASML), JPF Science Team

The Jovian Planet Finder (JPF) employs a 1.46-m diameter, compact off-axis telescope, super smooth mirrors, COSTAR-like corrector mirror, and coronagraph to achieve 1E3 reduction of the PSF surface brightness at 1-arcsec field angle and 0.5-micron observing wavelength. This performance enables detection of Exo-Jovian Planets (EJPs) orbiting nearby stars, which is the primary science objective of this MidEx-class mission. The JPF optical system employs technology developed for extreme ultra-violet semiconductor photolithography to fabricate a COSTAR-like corrector mirror. That mirror is required to correct the as-manufactured system wavefront to 0.5-nm. Previously, that technology has demonstrated 0.26-nm rms surface roughness in the mid-spatial frequency range of 5 50 cycyle per aperture. Recently, 0.13-m clear aperture correctors have been fabricated to match a predetermined surface profile. These correctors successfully matched the predetermined 18-nm r.m.s. amplitude profile to 0.3-nm r.m.s. accuracy in the 4 - 50 cycles per aperture spatial frequency band. This is a key step in demonstrating the feasibility of the JPF design.


If you would like more information about this abstract, please follow the link to http://www-int.stsci.edu/~clampin/jpf/. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

The author(s) of this abstract have provided an email address for comments about the abstract: petro@stsci.edu

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Bulletin of the American Astronomical Society, 34
© 2002. The American Astronomical Soceity.