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ELTs, adaptive optics and wavelengths - art. no. 698608

Ardeberg, Arne LU and Linde, Peter LU (2008) Retirement Symposium for Arne Ardeberg on Extremely Large Telescopes - Which Wavelengths In Extremely Large Telescopes: Which Wavelengths? Retirement Symposium for Arne Ardeberg 6986. p.98608-98608
Abstract
A number of Extremely Large Telescopes for visual-infrared and adjacent wavelengths are in various degrees of progress. All have primary mirrors with equivalent diameters larger than 20 m and are intended for operation with adaptive optics systems. We discuss several ELT observing parameters as functions of wavelength. Stellar energy distributions and atomic line spectra are inspected as are the transmission of the Earth's atmosphere, the emissivity of the sky and telescope and instruments as well as detector sensitivity, resolution and signal-to-noise ratio. The spatial resolution depending on the size of the diffraction limited adaptive optics point spread function is discussed. We have evaluated the ELT efficiency in terms of Johnson V... (More)
A number of Extremely Large Telescopes for visual-infrared and adjacent wavelengths are in various degrees of progress. All have primary mirrors with equivalent diameters larger than 20 m and are intended for operation with adaptive optics systems. We discuss several ELT observing parameters as functions of wavelength. Stellar energy distributions and atomic line spectra are inspected as are the transmission of the Earth's atmosphere, the emissivity of the sky and telescope and instruments as well as detector sensitivity, resolution and signal-to-noise ratio. The spatial resolution depending on the size of the diffraction limited adaptive optics point spread function is discussed. We have evaluated the ELT efficiency in terms of Johnson V to N band photometry, simulating diffraction-limited ELT images of a stellar field at 4 Mpc and 4 kpc, respectively. We conclude that the information content at shorter wavelengths is of dominant nature and that there is every reason to do the utmost to include shorter wavelengths in the AO regime. We propose to adopt a short-wave length goal of 1 000 nm for first light AO with later updates reaching down to visual wavelengths. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
wavelength range, Extremely Large Telescopes, adaptive optics, point-spread function, spatial resolution, collection, photon, photometry
in
Extremely Large Telescopes: Which Wavelengths? Retirement Symposium for Arne Ardeberg
volume
6986
pages
98608 - 98608
publisher
SPIE
conference name
Retirement Symposium for Arne Ardeberg on Extremely Large Telescopes - Which Wavelengths
external identifiers
  • wos:000258065600007
  • scopus:43549096403
ISSN
0277-786X
1996-756X
DOI
10.1117/12.801259
language
English
LU publication?
yes
id
204db1a4-3f4b-4299-970f-075d12fa9b37 (old id 1406116)
date added to LUP
2009-06-08 13:41:15
date last changed
2017-11-20 15:06:03
@inproceedings{204db1a4-3f4b-4299-970f-075d12fa9b37,
  abstract     = {A number of Extremely Large Telescopes for visual-infrared and adjacent wavelengths are in various degrees of progress. All have primary mirrors with equivalent diameters larger than 20 m and are intended for operation with adaptive optics systems. We discuss several ELT observing parameters as functions of wavelength. Stellar energy distributions and atomic line spectra are inspected as are the transmission of the Earth's atmosphere, the emissivity of the sky and telescope and instruments as well as detector sensitivity, resolution and signal-to-noise ratio. The spatial resolution depending on the size of the diffraction limited adaptive optics point spread function is discussed. We have evaluated the ELT efficiency in terms of Johnson V to N band photometry, simulating diffraction-limited ELT images of a stellar field at 4 Mpc and 4 kpc, respectively. We conclude that the information content at shorter wavelengths is of dominant nature and that there is every reason to do the utmost to include shorter wavelengths in the AO regime. We propose to adopt a short-wave length goal of 1 000 nm for first light AO with later updates reaching down to visual wavelengths.},
  author       = {Ardeberg, Arne and Linde, Peter},
  booktitle    = {Extremely Large Telescopes: Which Wavelengths? Retirement Symposium for Arne Ardeberg},
  issn         = {0277-786X},
  keyword      = {wavelength range,Extremely Large Telescopes,adaptive optics,point-spread function,spatial resolution,collection,photon,photometry},
  language     = {eng},
  pages        = {98608--98608},
  publisher    = {SPIE},
  title        = {ELTs, adaptive optics and wavelengths - art. no. 698608},
  url          = {http://dx.doi.org/10.1117/12.801259},
  volume       = {6986},
  year         = {2008},
}