Multi-conjugate Adaptive Optics for the Swedish ELT Investigation of the Effects of Laser Guide Stars at a finite Distance.
(2002) 58. p.299-299- Abstract
- In a recent paper we presented a procedure for optimal analyticalcontrol of several deformable mirrors based on only the measured guidestar wavefronts. The expected performance was evaluated for variousguide star configurations using up to three deformable mirrors. Forsimplicity the guide stars were assumed to be infinitely distant. Inthis paper we address the effect of using laser guide stars in 90 kmaltitude for the wavefront measurements. As a consequence of this, theimage of a distant science star will not be adequately corrected bycounteracting the wavefront error measured by a laser guide star in thesame direction as the science star. This problem will be more pronouncedthe larger is the telescope diameter. We present a modified... (More)
- In a recent paper we presented a procedure for optimal analyticalcontrol of several deformable mirrors based on only the measured guidestar wavefronts. The expected performance was evaluated for variousguide star configurations using up to three deformable mirrors. Forsimplicity the guide stars were assumed to be infinitely distant. Inthis paper we address the effect of using laser guide stars in 90 kmaltitude for the wavefront measurements. As a consequence of this, theimage of a distant science star will not be adequately corrected bycounteracting the wavefront error measured by a laser guide star in thesame direction as the science star. This problem will be more pronouncedthe larger is the telescope diameter. We present a modified version ofthe mirror control algorithm taking the finite distance of the laserguide stars into account and some preliminary performance evaluationswith special emphasis on the consequences for ELTs. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/528022
- author
- Owner-Petersen, Mette LU and Gontcharov, Alexander LU
- organization
- publishing date
- 2002
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- Beyond conventional adaptive optics : a conference devoted to the development of adaptive optics for extremely large telescopes. Proceedings of the Topical Meeting held May 7-10, 2001, Venice, Italy.
- editor
- Vernet, E ; Ragazzoni, R ; Esposito, S and Hubin, N
- volume
- 58
- pages
- 299 - 299
- ISBN
- 3923524617
- language
- English
- LU publication?
- yes
- id
- 3e273181-6aea-4d2e-b327-79275939bcb4 (old id 528022)
- date added to LUP
- 2016-04-04 13:58:14
- date last changed
- 2018-11-21 21:17:29
@inproceedings{3e273181-6aea-4d2e-b327-79275939bcb4, abstract = {{In a recent paper we presented a procedure for optimal analyticalcontrol of several deformable mirrors based on only the measured guidestar wavefronts. The expected performance was evaluated for variousguide star configurations using up to three deformable mirrors. Forsimplicity the guide stars were assumed to be infinitely distant. Inthis paper we address the effect of using laser guide stars in 90 kmaltitude for the wavefront measurements. As a consequence of this, theimage of a distant science star will not be adequately corrected bycounteracting the wavefront error measured by a laser guide star in thesame direction as the science star. This problem will be more pronouncedthe larger is the telescope diameter. We present a modified version ofthe mirror control algorithm taking the finite distance of the laserguide stars into account and some preliminary performance evaluationswith special emphasis on the consequences for ELTs.}}, author = {{Owner-Petersen, Mette and Gontcharov, Alexander}}, booktitle = {{Beyond conventional adaptive optics : a conference devoted to the development of adaptive optics for extremely large telescopes. Proceedings of the Topical Meeting held May 7-10, 2001, Venice, Italy.}}, editor = {{Vernet, E and Ragazzoni, R and Esposito, S and Hubin, N}}, isbn = {{3923524617}}, language = {{eng}}, pages = {{299--299}}, title = {{Multi-conjugate Adaptive Optics for the Swedish ELT Investigation of the Effects of Laser Guide Stars at a finite Distance.}}, volume = {{58}}, year = {{2002}}, }