The wavelength dependence of seeing
نویسنده
چکیده
The angular resolution of an astronomical telescope is often limited primarily by atmospheric turbulence, and this resolution limitation is conventionally referred to as atmospheric seeing. A systematic study of the wavelength dependence of this effect was conducted using the 1.5 m McMath solar telescope of Kitt Peak National Observatory, and this study is reported here. Telescope resolution was monitored simultaneously at wavelengths of 10 and 0.55 Am under a variety of atmospheric conditions. A high degree of correlation was found between the resolution at the two wavelengths, and the loss of resolution due to atmospheric effects was found to be systematically less by a factor of 1.9 at the longer wavelength.
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