NASA Jet Propulsion Laboratory California Institute of Technology Follow this link to skip to the main content

BEACON eSpace at Jet Propulsion Laboratory >
JPL Technical Report Server >
JPL TRS 1992+ >

Please use this identifier to cite or link to this item:

Title: Advancing technology for starlight supression via an external occulter
Authors: Lunar and Planetary Science and Exploration
Kasdin, N. J.
Lisman, D.
Shaklan, S.
Thomon, M.
Cady, E.
Martin, S.
Marchen, L.
Vanderbei, R. J.
Macintosh, B.
Savransky, D.
Rudd, R. E.
Mikula, J,
Lynch, D.
Keywords: external occulters
high-contrast imaging
Issue Date: 5-Jul-2012
Publisher: Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2012.
Citation: SPIE Astronomical Telescopes+Instrumentation, Amsterdam, Netherlands, July 1-6, 2012
Abstract: It is likely that the coming decade will see the development of a large visible light telescope with enabling technology for imaging exosolar Earthlike planets in the habitable zone of nearby stars. One such technology utilizes an external occulter, a satellite flying far from the telescope and employing a large screen, or starshade, to suppress the incoming starlight sufficiently for detecting and characterizing exoplanets. This trades the added complexity of building the precisely shaped starshade and flying it in formation against simpli cations in the telescope since extremely precise wavefront control is no longer necessary. In this paper we present the results of our project to design, manufacture, and measure a prototype occulter petal as part of NASA's first Technology Development for Exoplanet Missions program. We describe the mechanical design of the starshade and petal, the precision manufacturing tolerances, and the metrology approach. We demonstrate that the prototype petal meets the requirements and is consistent with a full-size occulter achieving better than 10¯¹° contrast
Appears in Collections:JPL TRS 1992+

Files in This Item:

File Description SizeFormat
12-3019.pdf14.34 MBAdobe PDFView/Open

Items in DSpace are protected by copyright, but are furnished with U.S. government purpose use rights.


Privacy/Copyright Image Policy Beacon Home Contact Us
NASA Home Page + Div 27
+ JPL Space
Site last updated on December 5, 2014.
If you have any comments or suggestions for this web site, please e-mail Robert Powers.