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Challenges to optimizing a telescope system to detect and characterize exo-solar planetary systems

Breckinridge, James B. (2005) Challenges to optimizing a telescope system to detect and characterize exo-solar planetary systems. In: Novel Optical Systems Design and Optimization VIII. Proceedings of SPIE. No.5875. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 587508. ISBN 9780819458803.

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Novel optical design and engineering ideas are needed to build the large space telescopes for the direct detection and characterization of exo-solar system planets. For example, the Terrestrial Planet Finder Coronagraph requires a primary mirror 4 x 8 meters in size that is >10 x smoother than the 2.8 meter HST mirror and have a uniform reflectivity across the mirror to within 0.1%. The telescope system will need to control scattered light to within a part in 10 billion. The Terrestrial Planet Finder Interferometer will be a white-light, broadband infrared interferometer with a baseline in excess of 50 meters. In addition to direct imaging, planets masses and orbits can be derived from very precise measurements of the position of a star as it moves across the background. Interferometers provide the highest accuracy measurements of relative positions We will show that the optical design and the mechanical layout & configuration for these new telescopes need to be optimized for polarization as well as scattered light. Material science and coating technology plays an important role in the optimization of these systems. Stress across the surface of a mirror and stress within the optical thin film introduces polarization dependent scattered light. A new method to measure the anisotropy of the polarization-reflectivity of thin metal films on large astronomical mirrors is described.

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Breckinridge, James B.0000-0002-9488-098X
Additional Information:© 2005 Society of Photo-Optical Instrumentation Engineers. The author acknowledges helpful discussion with John Trauger, Joe Carson and Stuart Shaklan of the Jet Propulsion Laboratory. This research was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.
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Series Name:Proceedings of SPIE
Issue or Number:5875
Record Number:CaltechAUTHORS:20181217-151248029
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Official Citation:James B. Breckinridge, "Challenges to optimizing a telescope system to detect and characterize exo-solar planetary systems", Proc. SPIE 5875, Novel Optical Systems Design and Optimization VIII, 587508 (29 August 2005); doi: 10.1117/12.619697
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91872
Deposited By: Tony Diaz
Deposited On:18 Dec 2018 18:18
Last Modified:16 Nov 2021 03:45

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