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Very high-resolution spectroscopy for extremely large telescopes using pupil slicing and adaptive optics

Beckers, Jacques M.; Andersen, Torben LU and Owner-Petersen, Mette LU (2007) In Optics Express 15(5). p.1983-1994
Abstract
Under seeing limited conditions very high resolution spectroscopy becomes very difficult for extremely large telescopes (ELTs). Using adaptive optics (AO) the stellar image size decreases proportional with the telescope diameter. This makes the spectrograph optics and hence its resolution independent of the telescope diameter. However AO for use with ELTs at visible wavelengths require deformable mirrors with many elements. Those are not likely to be available for quite some time. We propose to use the pupil slicing technique to create a number of sub-pupils each of which having its own deformable mirror. The images from all subpupils are combined incoherently with a diameter corresponding to the diffraction limit of the sub-pupil. The... (More)
Under seeing limited conditions very high resolution spectroscopy becomes very difficult for extremely large telescopes (ELTs). Using adaptive optics (AO) the stellar image size decreases proportional with the telescope diameter. This makes the spectrograph optics and hence its resolution independent of the telescope diameter. However AO for use with ELTs at visible wavelengths require deformable mirrors with many elements. Those are not likely to be available for quite some time. We propose to use the pupil slicing technique to create a number of sub-pupils each of which having its own deformable mirror. The images from all subpupils are combined incoherently with a diameter corresponding to the diffraction limit of the sub-pupil. The technique is referred to as "Pupil Slicing Adaptive Optics" or PSAO. (c) 2007 Optical Society of America. (Less)
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author
organization
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Contribution to journal
publication status
published
subject
in
Optics Express
volume
15
issue
5
pages
1983 - 1994
publisher
OSA
external identifiers
  • wos:000244682600002
  • scopus:33847762800
ISSN
1094-4087
language
English
LU publication?
yes
id
068e30b5-6922-4677-a8fd-cbdf1e057f6c (old id 671573)
alternative location
http://www.opticsinfobase.org/abstract.cfm?URI=oe-15-5-1983
date added to LUP
2007-12-07 14:48:02
date last changed
2017-01-15 04:06:25
@article{068e30b5-6922-4677-a8fd-cbdf1e057f6c,
  abstract     = {Under seeing limited conditions very high resolution spectroscopy becomes very difficult for extremely large telescopes (ELTs). Using adaptive optics (AO) the stellar image size decreases proportional with the telescope diameter. This makes the spectrograph optics and hence its resolution independent of the telescope diameter. However AO for use with ELTs at visible wavelengths require deformable mirrors with many elements. Those are not likely to be available for quite some time. We propose to use the pupil slicing technique to create a number of sub-pupils each of which having its own deformable mirror. The images from all subpupils are combined incoherently with a diameter corresponding to the diffraction limit of the sub-pupil. The technique is referred to as "Pupil Slicing Adaptive Optics" or PSAO. (c) 2007 Optical Society of America.},
  author       = {Beckers, Jacques M. and Andersen, Torben and Owner-Petersen, Mette},
  issn         = {1094-4087},
  language     = {eng},
  number       = {5},
  pages        = {1983--1994},
  publisher    = {OSA},
  series       = {Optics Express},
  title        = {Very high-resolution spectroscopy for extremely large telescopes using pupil slicing and adaptive optics},
  volume       = {15},
  year         = {2007},
}