Radio plasma fringes as guide stars: Tracking the global tilt

Details Radio plasma fringes as guide stars: Tracking the global tilt Radio plasma fringes as guide stars: Tracking the global tilt

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003a%26a...410..365r&link_type=abstract

Astronomy and Astrophysics, v.410, p.365-373 (2003)

Physics

Optics

Instrumentation: Adaptive Optics, Plasmas, Techniques: Interferometric, Methods: Data Analysis

Scientific paper

We present a novel technique to alleviate the problem of the global tilt in artificial guide stars for adaptive optics. This technique is based on the registration of trails of radio-excited plasma spots caused by the atmospheric tilt. Following the time trace of the trails one can find and measure the tilt produced by atmospheric turbulent layers. Different methods were applied to estimate the extent of the trails. We describe results of computer simulations, showing the performance of the proposed approach.

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