Performance of hybrid occulters using apodized pupil Lyot coronagraphy

Eric Cady, Laurent Pueyo, Rémi Soummer, N. Jeremy Kasdin

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

6 Scopus citations


The internal coronagraph and the external occulter have both been proposed for imaging extrasolar planets; each has its own strengths and weaknesses. Internal coronagraphs require very accurate wavefront control, while occulters require accurate positioning and alignment, and a precisely manufactured shape. A hybrid occulter, which combines the two technologies, ideally reduces the tolerances on each, making both sytems more manufacturable. Our hybrid occulter concept combines the apodized pupil Lyot coronagraph with an external occulter. We present a number of designs which cover a wide span of suppression levels, and give a framework for creating further families of occulters with desired potential science bandwidths, occulter angular sizes, and diameters of the telescope secondary. All of these designs are capable of reaching 10 10 contrast over their entire spectrum of design. We also characterize the edge tolerances required for both systems.

Original languageEnglish (US)
Title of host publicationSpace Telescopes and Instrumentation 2008
Subtitle of host publicationOptical, Infrared, and Millimeter
StatePublished - 2008
EventSpace Telescopes and Instrumentation 2008: Optical, Infrared, and Millimeter - Marseille, France
Duration: Jun 23 2008Jun 28 2008

Publication series

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


OtherSpace Telescopes and Instrumentation 2008: Optical, Infrared, and Millimeter

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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