Reeves, A. P. and Morris, T. J. and Myers, R. M. and Bharmal, N. A. and Osborn, J. (2016) 'A tomographic algorithm to determine tip-tilt information from laser guide stars.', Monthly notices of the Royal Astronomical Society., 459 (1). pp. 333-341.
Abstract
Laser Guide Stars (LGS) have greatly increased the sky-coverage of Adaptive Optics (AO) systems. Due to the up-link turbulence experienced by LGSs, a Natural Guide Star (NGS) is still required, preventing full sky-coverage. We present a method of obtaining partial tip-tilt information from LGSs alone in multi-LGS tomographic LGS AO systems. The method of LGS up-link tip-tilt determination is derived using a geometric approach, then an alteration to the Learn and Apply algorithm for tomographic AO is made to accommodate up-link tip-tilt. Simulation results are presented, verifying that the technique shows good performance in correcting high altitude tip-tilt, but not that from low altitudes. We suggest that the method is combined with multiple far off-axis tip-tilt NGSs to provide gains in performance and sky-coverage over current tomographic AO systems.
| Item Type: | Article |
|---|---|
| Full text: | (AM) Accepted Manuscript Download PDF (1634Kb) |
| Full text: | (VoR) Version of Record Download PDF (Advance online version) (888Kb) |
| Full text: | (VoR) Version of Record Download PDF (Final published version) (1531Kb) |
| Status: | Peer-reviewed |
| Publisher Web site: | http://dx.doi.org/10.1093/mnras/stw622 |
| Publisher statement: | This article has been accepted for publication in Monthly notices of the Royal Astronomical Society ©: 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
| Date accepted: | 11 March 2016 |
| Date deposited: | 16 March 2016 |
| Date of first online publication: | 15 March 2016 |
| Date first made open access: | No date available |
Save or Share this output
| Export: | |
| Look up in GoogleScholar |
