Design of a laboratory testbed for external occulters at flight Fresnel numbers

Yunjong Kim, Mike Galvin, N. Jeremy Kasdin, Robert J. Vanderbei, Dongok Ryu, Ki Won Kim, Sug Whan Kim, Dan Sirbu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Citations (Scopus)

Abstract

One of the main candidates for creating high-contrast for future Exo-Earth detection is an external occulter or sharshade. A starshade blocks the light from the parent star by flying in formation along the line-of-sight from a space telescope. Because of its large size and scale it is impossible to fully test a starshade system on the ground before launch. Instead, we rely on modeling supported by subscale laboratory tests to verify the models. At Princeton, we are designing and building a subscale testbed to verify the suppression and contrast of a starshade at the same Fresnel number as a flight system, and thus mathematically identical to a realistic space mission. Here we present the mechanical design of the testbed and simulations predicting the ultimate contrast performance. We will also present progress in implementation and preliminary results.

Original languageEnglish
Title of host publicationTechniques and Instrumentation for Detection of Exoplanets VII
EditorsStuart Shaklan
PublisherSPIE
ISBN (Electronic)9781628417715
DOIs
Publication statusPublished - 2015
EventTechniques and Instrumentation for Detection of Exoplanets VII - San Diego, United States
Duration: 2015 Aug 102015 Aug 13

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9605
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherTechniques and Instrumentation for Detection of Exoplanets VII
CountryUnited States
CitySan Diego
Period15/8/1015/8/13

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Kim, Y., Galvin, M., Kasdin, N. J., Vanderbei, R. J., Ryu, D., Kim, K. W., Kim, S. W., & Sirbu, D. (2015). Design of a laboratory testbed for external occulters at flight Fresnel numbers. In S. Shaklan (Ed.), Techniques and Instrumentation for Detection of Exoplanets VII [960511] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9605). SPIE. https://doi.org/10.1117/12.2186349