A survey of diffraction effects in various total solar irradiance monitors

Details A survey of diffraction effects in various total solar irradiance monitors A survey of diffraction effects in various total solar irradiance monitors

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufmgc21b0872s&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #GC21B-0872

Astronomy and Astrophysics

Astrophysics

[7538] Solar Physics, Astrophysics, And Astronomy / Solar Irradiance, [9805] General Or Miscellaneous / Instruments Useful In Three Or More Fields

Scientific paper

Instruments that monitor total solar irradiance (TSI) need to be fully characterized in regards to many aspects. Important effects include proper realization of the optical watt, accurate determination of the effective area of the detector, minimization and characterization of light scatter, and correcting for diffraction effects that undermine geometrical-optics assumption. We will discuss trends in diffraction effects for the various present and past TSI instruments. Our discussion will include estimates of the effects on results because of the finite size of the sun as well as its limb darkening. Our survey will include analysis of many US and European satellite-based sensors.

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