Tilt anisoplanatism in laser-guide-star-based multiconjugate adaptive optics. Reconstruction of the long exposure point spread function from control loop data
(2003) In Astronomy & Astrophysics 400(3). p.1199-1207- Abstract
- A method is presented for estimating the long exposure point spreadfunction (PSF) degradation due to tilt anisoplanatism in alaser-guide-star-based multiconjugate adaptive optics systems fromcontrol loop data. The algorithm is tested in numerical Monte Carlosimulations of the separately driven low-order null-mode system, and isshown to be robust and accurate with less than 10 relative error inboth H and K bands down to a natural guide star (NGS) magnitude ofmR=21, for a symmetric asterism with three NGS on a 30 arcsec radius.The H band limiting magnitude of the null-mode system due to NGSsignal-to-noise ratio and servo-lag was estimated previously to mR=19.At this magnitude, the relative errors in the reconstructed PSF andStrehl are here... (More)
- A method is presented for estimating the long exposure point spreadfunction (PSF) degradation due to tilt anisoplanatism in alaser-guide-star-based multiconjugate adaptive optics systems fromcontrol loop data. The algorithm is tested in numerical Monte Carlosimulations of the separately driven low-order null-mode system, and isshown to be robust and accurate with less than 10 relative error inboth H and K bands down to a natural guide star (NGS) magnitude ofmR=21, for a symmetric asterism with three NGS on a 30 arcsec radius.The H band limiting magnitude of the null-mode system due to NGSsignal-to-noise ratio and servo-lag was estimated previously to mR=19.At this magnitude, the relative errors in the reconstructed PSF andStrehl are here found to be less than 5 and 1, suggesting that the PSFretrieval algorithm will be applicable and reliable for the full rangeof operating conditions of the null-mode system. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/130566
- author
- Flicker, Ralf LU ; Rigaut, F J and Ellerbroek, B L
- organization
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Instrumentation, adaptive optics, methods, statistical
- in
- Astronomy & Astrophysics
- volume
- 400
- issue
- 3
- pages
- 1199 - 1207
- publisher
- EDP Sciences
- external identifiers
-
- wos:000181456500039
- scopus:0037341586
- ISSN
- 0004-6361
- DOI
- 10.1051/0004-6361:20030022
- language
- English
- LU publication?
- yes
- id
- 3747df13-7a4f-4ffd-b3d4-d5d0e529c0dc (old id 130566)
- date added to LUP
- 2016-04-01 17:13:31
- date last changed
- 2024-01-11 22:56:50
@article{3747df13-7a4f-4ffd-b3d4-d5d0e529c0dc, abstract = {{A method is presented for estimating the long exposure point spreadfunction (PSF) degradation due to tilt anisoplanatism in alaser-guide-star-based multiconjugate adaptive optics systems fromcontrol loop data. The algorithm is tested in numerical Monte Carlosimulations of the separately driven low-order null-mode system, and isshown to be robust and accurate with less than 10 relative error inboth H and K bands down to a natural guide star (NGS) magnitude ofmR=21, for a symmetric asterism with three NGS on a 30 arcsec radius.The H band limiting magnitude of the null-mode system due to NGSsignal-to-noise ratio and servo-lag was estimated previously to mR=19.At this magnitude, the relative errors in the reconstructed PSF andStrehl are here found to be less than 5 and 1, suggesting that the PSFretrieval algorithm will be applicable and reliable for the full rangeof operating conditions of the null-mode system.}}, author = {{Flicker, Ralf and Rigaut, F J and Ellerbroek, B L}}, issn = {{0004-6361}}, keywords = {{Instrumentation; adaptive optics; methods; statistical}}, language = {{eng}}, number = {{3}}, pages = {{1199--1207}}, publisher = {{EDP Sciences}}, series = {{Astronomy & Astrophysics}}, title = {{Tilt anisoplanatism in laser-guide-star-based multiconjugate adaptive optics. Reconstruction of the long exposure point spread function from control loop data}}, url = {{https://lup.lub.lu.se/search/files/4913219/624160.pdf}}, doi = {{10.1051/0004-6361:20030022}}, volume = {{400}}, year = {{2003}}, }