Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spie.4854..108l&link_type=abstract
Future EUV/UV and Visible Space Astrophysics Missions and Instrumentation. Edited by J. Chris Blades, Oswald H. W. Siegmund. P
Astronomy and Astrophysics
Astrophysics
Scientific paper
Visible light coronagraphy from space is a promising technique for extrasolar planet detection and characterization. However, technology development in several areas is needed before a search for terrestrial planets is feasible with a coronagraph. The most challenging technologies appear to be: construction of 10 m scale, precision lightweight optics; millikelvin level control of temperature changes; and achieving reflectivity uniformity of 10-4 across all mirrors. Additional technical challenges include: wavefront sensing to the sub-angstrom level; precise, stable deformable mirrors; and construction of coronagraphic masks with accurate shape or transmission profile. The current status and suggested development path of these technologies will be discussed.
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