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.
|Title of host publication||Techniques and Instrumentation for Detection of Exoplanets VII|
|Publication status||Published - 2015|
|Event||Techniques and Instrumentation for Detection of Exoplanets VII - San Diego, United States|
Duration: 2015 Aug 10 → 2015 Aug 13
|Name||Proceedings of SPIE - The International Society for Optical Engineering|
|Other||Techniques and Instrumentation for Detection of Exoplanets VII|
|Period||15/8/10 → 15/8/13|
Bibliographical notePublisher Copyright:
© 2015 SPIE.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering