Artificial optical guidestars: prospects for extremely large telescopes

R. Q. Fugate

doi:10.1117/12.801268

22 April 2008 Artificial optical guidestars: prospects for extremely large telescopes

R. Q. Fugate

Proceedings Volume 6986, Extremely Large Telescopes: Which Wavelengths? Retirement Symposium for Arne Ardeberg; 69860F (2008) https://doi.org/10.1117/12.801268
Event: Extremely Large Telescopes: Which Wavelengths? Retirement Symposium for Arne Ardeberg, 2007, Lund, Sweden

Abstract

This paper discusses the concept of employing artificial guide stars to correct atmospheric turbulence induced wavefront distortion for Extremely Large Telescopes (ELTs) conducting science observations at near IR and visible wavelengths. A set of generic laser guide star requirements for ELTs is established with the caveat that a community wide consensus on laser parameters would benefit the advancement of laser technology. Currently available laser guide star systems are examined in light of the requirements and their limitations referenced to the requirements are discussed. A short summary is provided of current research and development efforts to advance laser performance. Finally, a new concept is presented for generating very bright optical guidestars using high power microwaves to create, sustain, and move about the sky a high altitude, compact plasma.

Citation Download Citation

R. Q. Fugate "Artificial optical guidestars: prospects for extremely large telescopes", Proc. SPIE 6986, Extremely Large Telescopes: Which Wavelengths? Retirement Symposium for Arne Ardeberg, 69860F (22 April 2008); https://doi.org/10.1117/12.801268

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