Fried's parameter derived from observations of granulation outside the disk centre

Details Fried's parameter derived from observations of granulation outside the disk centre Fried's parameter derived from observations of granulation outside the disk centre

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.170..155r&link_type=abstract

(IAU, European Regional Astronomy Meeting, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics and Space Science (ISSN 0004-640

Astronomy and Astrophysics

Astrophysics

3

Solar Granulation, Solar Limb, Solar Spectra, Astronomical Photometry, Power Spectra, Solar Observatories

Scientific paper

A new method has recently been developed to obtain the Fried's parameter from observations of granulation outside the disk center, based on the different degradation suffered by the images on the directions parallel and perpendicular to the solar limb, due to the geometrical foreshortening. This procedure has been applied to CCD images obtained at the Swedish Solar Tower of the Observatorio del Roque de los Muchachos, with satisfactory results which are presented and discussed.

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