Physics – Optics
Scientific paper
Apr 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007oexpr..15.4711c&link_type=abstract
Optics Express, vol. 15, Issue 8, pp.4711-4725
Physics
Optics
7
Active Or Adoptive Optics, Wave-Front Sensing
Scientific paper
When using a laser guide star (LGS) adaptive optics (AO) system, quasi-static aberrations are observed between the measured wavefronts from the LGS wavefront sensor (WFS) and the natural guide star (NGS) WFS. These LGS aberrations, which can be as much as 1200 nm RMS on the Keck II LGS AO system, arise due to the finite height and structure of the sodium layer. The LGS aberrations vary significantly between nights due to the difference in sodium structure. In this paper, we successfully model these LGS aberrations for the Keck II LGS AO system. We use this model to characterize the LGS aberrations as a function of pupil angle, elevation, sodium structure, uplink tip/tilt error, detector field of view, the number of detector pixels, and seeing. We also employ the model to estimate the LGS aberrations for the Palomar LGS AO system, the planned Keck I and the Thirty Meter Telescope (TMT) LGS AO systems. The LGS aberrations increase with increasing telescope diameter, but are reduced by central projection of the laser compared to side projection.
Bouchez Antonin H.
Clare Richard M.
van Dam Marcos A.
No associations
LandOfFree
Modeling low order aberrations in laser guide star adaptive optics systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Modeling low order aberrations in laser guide star adaptive optics systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modeling low order aberrations in laser guide star adaptive optics systems will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1360129