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Measurement of the atmospheric primary aberrations by a 4-aperture differential image motion monitor

Shomali, Ramin; Nasiri, Sadollah and Darudi, Ahmad LU (2011) In Journal of Optics 13(5).
Abstract
The present paper investigates and discusses the ability of the Hartmann test with a 4-aperture differential image motion monitor (DIMM) to measure the atmospheric primary aberrations which, in turn, can be used for the calculation of the atmospheric coherence time. Through performing numerical simulations, we show that the 4-aperture DIMM is able to measure the defocus and astigmatism terms correctly whereas its results are not reliable for the coma. The most important limitations in the measurement of the primary aberrations by the 4-aperture DIMM are the centroid displacements of the spots which are caused by the higher order aberrations. This effect is negligible in the calculation of the defocus and astigmatisms, whereas it cannot be... (More)
The present paper investigates and discusses the ability of the Hartmann test with a 4-aperture differential image motion monitor (DIMM) to measure the atmospheric primary aberrations which, in turn, can be used for the calculation of the atmospheric coherence time. Through performing numerical simulations, we show that the 4-aperture DIMM is able to measure the defocus and astigmatism terms correctly whereas its results are not reliable for the coma. The most important limitations in the measurement of the primary aberrations by the 4-aperture DIMM are the centroid displacements of the spots which are caused by the higher order aberrations. This effect is negligible in the calculation of the defocus and astigmatisms, whereas it cannot be ignored in the calculation of the coma. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
atmospheric turbulence, wavefront sensing, remote sensing and sensors
in
Journal of Optics
volume
13
issue
5
publisher
IOP Publishing
external identifiers
  • wos:000292185100033
  • scopus:79955823957
ISSN
2040-8986
DOI
10.1088/2040-8978/13/5/055708
language
English
LU publication?
yes
id
f89b956f-f6d7-4933-988f-ca1ee907b0d9 (old id 2042291)
date added to LUP
2011-07-26 14:04:39
date last changed
2017-01-01 03:12:24
@article{f89b956f-f6d7-4933-988f-ca1ee907b0d9,
  abstract     = {The present paper investigates and discusses the ability of the Hartmann test with a 4-aperture differential image motion monitor (DIMM) to measure the atmospheric primary aberrations which, in turn, can be used for the calculation of the atmospheric coherence time. Through performing numerical simulations, we show that the 4-aperture DIMM is able to measure the defocus and astigmatism terms correctly whereas its results are not reliable for the coma. The most important limitations in the measurement of the primary aberrations by the 4-aperture DIMM are the centroid displacements of the spots which are caused by the higher order aberrations. This effect is negligible in the calculation of the defocus and astigmatisms, whereas it cannot be ignored in the calculation of the coma.},
  articleno    = {055708},
  author       = {Shomali, Ramin and Nasiri, Sadollah and Darudi, Ahmad},
  issn         = {2040-8986},
  keyword      = {atmospheric turbulence,wavefront sensing,remote sensing and sensors},
  language     = {eng},
  number       = {5},
  publisher    = {IOP Publishing},
  series       = {Journal of Optics},
  title        = {Measurement of the atmospheric primary aberrations by a 4-aperture differential image motion monitor},
  url          = {http://dx.doi.org/10.1088/2040-8978/13/5/055708},
  volume       = {13},
  year         = {2011},
}