New optical design of adaptive optics system at Lick Observatory
| Autor: | Kristian A. Keahi, Michael J. Newman, Donald T. Gavel, Thomas C. Kuklo, Shordon K. Lopes, Scot S. Olivier, Gary J. Freeze, Brian J. Bauman, Kenneth E. Waltjen |
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| Rok vydání: | 1999 |
| Předmět: |
Physics
business.industry Astrophysics::Instrumentation and Methods for Astrophysics Physics::Optics Astrophysics::Cosmology and Extragalactic Astrophysics Wavefront sensor law.invention Telescope Interferometry Optics Laser guide star law Observatory Astronomical interferometer Guide star business Adaptive optics |
| Zdroj: | SPIE Proceedings. |
| ISSN: | 0277-786X |
| Popis: | We present the requirements, design, and resulting new layout for the laser guide star/natural guide star (LGUNGS) adaptive optics (AO) system on the 3-meter Shane telescope at Lick Observatory. This layout transforms our engineering prototype into a stable, reliable, maintainable end-user-oriented system, suitable for use as a facility instrument. Important new features include convenient calibration using proven phase-shifting diffraction interferometer or phase-diversity techniques'; a new wavefront sensor design that uses the science path's f/28.5 parabola; improved field stop mechanics for better Rayleigh- scatter rejection in LGS mode and better guide-star selection NGS mode; high-sensitivity, wide-field acquisition camera; and significant improvements in adjustment motorization and optomechanical stability. Keywords: Adaptive optics, Lick Observatory, laser guide-star, natural guide-star, phase-shifting diffraction interferometer, phase-diversity, optical design, Bravais lens |
| Databáze: | OpenAIRE |
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