Simulations of Atmospheric Turbulence and Instrumentation on Solar Observations

Details Simulations of Atmospheric Turbulence and Instrumentation on Solar Observations Simulations of Atmospheric Turbulence and Instrumentation on Solar Observations

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agusmsp51b..08w&link_type=abstract

American Geophysical Union, Spring Meeting 2008, abstract #SP51B-08

Physics

Optics

7529 Photosphere, 7594 Instruments And Techniques

Scientific paper

We investigate the influence of atmospheric turbulence and instrumentation on solar observations. The focus of this study is the determination of the amount of bias introduced in velocity measurements by these effects. The magnetically insensitive Fe I 557.6 nm line is synthesized using three-dimensional simulations of solar magneto-convection as an input model for a radiation transfer code. The synthesized spectra are then subjected to different atmospheric conditions characterized by the Fried parameters r0 = 7, 10, and 15 cm. To simulate realistic observations at NSO's Dunn solar telescope (DST), we mimic the influence of a 0.76 m aperture telescope, a high-order adaptive optics (AO) system and a tunable filtergraph on the atmospherically distorted spectra.

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