Result: Astronomical coronagraphy with high order adaptive optics

Title:
Astronomical coronagraphy with high order adaptive optics
Authors:
LLOYD, James P, GRAHAM, James R, POTTER, Dan, KALAS, Paul, OPPENHEIMER, Ben R, SIVARAMAKRISHNAN, Anand, MAKIDON, Russell, MACINTOSH, Bruce A, MAX, Claire, BAUDOZ, Pierre, KUHN, Jeff
Source:
Multifrequency electronic / photonic devices and systems for dual-use applications (San Diego CA, 29-30 July 2001)SPIE proceedings series. :290-297
Publisher Information:
Bellingham WA: SPIE, 2001.
Publication Year:
2001
Physical Description:
print, 13 ref
Original Material:
INIST-CNRS
Subject Terms:
Electronics, Electronique, Optics, Optique, Physics, Physique, Telecommunications, Télécommunications, Sciences exactes et technologie, Exact sciences and technology, Terre, ocean, espace, Earth, ocean, space, Astronomie, Astronomy, Astronomie fondamentale et astrophysique. Instrumentation, techniques, et observations astronomiques, Fundamental astronomy and astrophysics. Instrumentation, techniques, and astronomical observations, Techniques d'observation et de réduction des données. Simulation et modélisation par ordinateur, Observation and data reduction techniques. Computer modeling and simulation, Optique adaptative et segmentée, Adaptive and segmented optics, Coronographe, Coronographs, Instrument astronomique, Astronomical instruments, Optique adaptative, Adaptive optics, Optique astronomique, Astronomical optics, Optica astronómica
Document Type:
Conference Conference Paper
File Description:
text
Language:
English
Author Affiliations:
Department of Astronomy, University of California, Berkeley, CA 94720, United States
Space Telescope Science Institute, Baltimore, MD 21218, United States
Lawrence Livermore National Laboratory, Livermore, CA 94551, United States
Institute for Astronomy, Univerity of Hawaii, Manoa, HI 96822, Bolivia
Access URL:
http://pascal-francis.inist.fr/vibad/index.php?action=search&terms=14053732
Rights:
Copyright 2002 INIST-CNRS
CC BY 4.0
Sauf mention contraire ci-dessus, le contenu de cette notice bibliographique peut être utilisé dans le cadre d’une licence CC BY 4.0 Inist-CNRS / Unless otherwise stated above, the content of this bibliographic record may be used under a CC BY 4.0 licence by Inist-CNRS / A menos que se haya señalado antes, el contenido de este registro bibliográfico puede ser utilizado al amparo de una licencia CC BY 4.0 Inist-CNRS
Notes:
Astronomy
Accession Number:
edscal.14053732
Database:
PASCAL Archive

Further Information

Space surveillance systems have recently been developed that exploit high order adaptive optics systems to take diffraction limited images in visible light on 4 meter class telescopes. Most astronomical targets are faint, thus driving astronomical AO systems towards larger subapertures, and thus longer observing wavelengths for diffraction limited imaging at moderate Strehl ratio. There is, however, a particular niche that can be exploited by turning these visible light space surveillance systems to astronomical use at infrared wavelengths. At the longer wavelengths, the Strehl ratio rises dramatically, thus placing more light into the diffracted Airy pattern compared to the atmospheric halo. A Lyot coronagraph can be used to suppress the diffracted light from an on axis star, and observe faint companions and debris disks around nearby, bright stars. These very high contrast objects can only be observed with much higher order adaptive optics systems than are presently available to the astronomical community. We describe simulations of high order adaptive optics coronagraphs, and outline a project to deploy an astronomical coronagraph at the Air Force AEOS facility at the Maui Space Surveillance System.