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Demonstration of vortex coronagraph concepts for on-axis telescopes on the Palomar Stellar Double Coronagraph

Mawet, Dimitri and Shelton, Chris and Wallace, James and Bottom, Michael and Kuhn, Jonas and Mennesson, Bertrand and Burruss, Rick and Bartos, Randy and Pueyo, Laurent and Carlotti, Alexis and Serabyn, Eugene (2014) Demonstration of vortex coronagraph concepts for on-axis telescopes on the Palomar Stellar Double Coronagraph. In: Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave. Proceedings of SPIE. No.9143. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellinhgam, WA, Art. No. 91432T. http://resolver.caltech.edu/CaltechAUTHORS:20150520-113150067

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Abstract

Here we present preliminary results of the integration of two recently proposed vortex coronagraph (VC) concepts for on-axis telescopes on the Stellar Double Coronagraph (SDC) bench behind PALM-3000, the extreme adaptive optics system of the 200-inch Hale telescope of Palomar observatory. The multi-stage vortex coronagraph (MSVC) uses the ability of the vortex to move light in and out of apertures through multiple VC in series to restore the nominal attenuation capability of the charge 2 vortex regardless of the aperture obscurations. The ring-apodized vortex coronagraph (RAVC) is a one-stage apodizer exploiting the VC Lyot-plane amplitude distribution in order to perfectly null the diffraction from any central obscuration size, and for any vortex topological charge. The RAVC is thus a simple concept that makes the VC immune to diffraction effects of the secondary mirror. It combines a vortex phase mask in the image plane with a single pupil-based amplitude ring apodizer, tailor-made to exploit the unique convolution properties of the VC at the Lyot-stop plane. The prototype apodizer uses the same microdot technology that was used to manufacture the apodized pupil Lyot coronagraph (APLC) equipping SPHERE, GPI and P1640.


Item Type:Book Section
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URLURL TypeDescription
http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1894816DOIArticle
http://dx.doi.org/10.1117/12.2057274PublisherArticle
ORCID:
AuthorORCID
Mawet, Dimitri0000-0002-8895-4735
Bottom, Michael0000-0003-1341-5531
Additional Information:© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE). Date Published: 4 September 2014. This work was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
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Funding AgencyGrant Number
NASA/JPL/CaltechUNSPECIFIED
Record Number:CaltechAUTHORS:20150520-113150067
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20150520-113150067
Official Citation:Dimitri Mawet ; Chris Shelton ; James Wallace ; Michael Bottom ; Jonas Kuhn, et al. " Demonstration of vortex coronagraph concepts for on-axis telescopes on the Palomar Stellar Double Coronagraph ", Proc. SPIE 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, 91432T (August 28, 2014); doi:10.1117/12.2057274; http://dx.doi.org/10.1117/12.2057274
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57710
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:20 May 2015 19:01
Last Modified:18 Apr 2017 17:43

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