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UID:0-330@aerospace.technion.ac.il

DTSTART;TZID=Asia/Jerusalem:20190626T163000

DTEND;TZID=Asia/Jerusalem:20190626T173000

DTSTAMP:20230527T132502Z

URL:https://aerospace.technion.ac.il/events/control-and-estimation-challen
 ges-of-direct-exoplanet-imaging-from-space/

SUMMARY:Control and Estimation Challenges of Direct Exoplanet Imaging from 
 Space
DESCRIPTION:Lecturer:Leonid Pogorelyuk\n Faculty:Department of Mechanical a
 nd Aerospace Engineering\n Institute:Princeton University\n Location:Class
 room 165\, ground floor\, Library\, Aerospace Eng.\n Zoom: \n Abstract: \n
  Details: \n Taking an image of a planet proves to be extremely challengin
 g when the planet orbits a star tens of parsecs away from our sun. Light s
 ignals from an Earth-like exoplanets are 10 orders of magnitudes dimmer th
 an signals from their host stars and can only be detected by space telesco
 pes employing a special optical design - the coronagraph. However\, the fr
 action of the starlight blocked by coronagraphs suffers from manufacturing
  imperfections\, alignment errors\, and mechanical and thermal stresses ac
 ting on the instrument. These issues have to be addressed in real-time via
  estimation and control of the wavefront of the incoming light\, as well a
 s with offline image post-processing techniques.\nThe choice of observatio
 n and post-processing strategies has significant effect on the planet dete
 ctability threshold. In particular\, statistically informed reduced-order 
 approaches may reduce the severe wavefront stability requirements on futur
 e space telescopes\, making them more affordable and facilitating the disc
 overy and characterization of habitable exoplanets.
CATEGORIES:Seminars
LOCATION:Classroom 165\, ground floor\, Library\, Aerospace Eng.

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DTSTART:20190329T030000

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