Laser guide-star measurements at Lawrence Livermore National Laboratory
| Autor: | Donald T. Gavel, David A. Smauley, Horst D. Bissinger, Claire E. Max, John Duff, James M. Brase, James Horton, Kenneth Avicola, Kenneth E. Waltjen, D. A. Rapp, J. Thaddeus Salmon, Scot S. Olivier, Herbert W. Friedman |
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| Rok vydání: | 1993 |
| Předmět: |
Physics
Astrophysics::Instrumentation and Methods for Astrophysics Physics::Optics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Laser law.invention Telescope Laser guidance Stars Photometry (astronomy) Laser guide star law Observatory Astrophysics::Earth and Planetary Astrophysics Adaptive optics Astrophysics::Galaxy Astrophysics |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| Popis: | Recent results from the Laser Guide Star Project at Lawrence Livermore National Laboratory are presented. Photometry of the return signal has shown that the photon return is approximately 10 photons/cm2/ms at the pupil of the receiving telescope in agreement with a detailed model of the sodium interaction. Wavefronts of the laser guide star have also been measured with a Shack-Hartmann technique and power spectra have been shown to agree with those of nearby natural stars. Plans for closed loop demonstrations using the laser guide star at LLNL and nearby Lick Observatory are discussed.© (1993) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only. |
| Databáze: | OpenAIRE |
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