Computer Science – Performance
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.1204p&link_type=abstract
American Astronomical Society, 200th AAS Meeting, #12.04; Bulletin of the American Astronomical Society, Vol. 34, p.660
Computer Science
Performance
Scientific paper
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.
Bajuk D.
Clampin Marc
Ford Holland
Ftaclas Chris
Illingworth Garth
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