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18 December 2000 Efficiency variations of UVCS/SOHO based on laboratory measurements of replica gratings
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Abstract
We have carried out measurements of efficiency as functions of position across the surfaces of replica grating made from the same masters as the UVCS/SOHO flight units. Variations in first order efficiency which significantly affect the interpretation of UVCS data are found along the direction perpendicular to the grooves. Variations are also found along the direction parallel to the grooves, but these do not seriously affect UVCS data interpretation. The measurements and their application to the radiometric calibration of UVCS/SOHO are discussed.
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Larry D. Gardner, Nigel Atkins, Silvano Fineschi, Peter L. Smith, John L. Kohl, L. Maccari, and Marco Romoli "Efficiency variations of UVCS/SOHO based on laboratory measurements of replica gratings", Proc. SPIE 4139, Instrumentation for UV/EUV Astronomy and Solar Missions, (18 December 2000); https://doi.org/10.1117/12.410542
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