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Publication Citation: Stray-Light Correction Algorithm for Spectrographs

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Author(s): Steven W. Brown; Bettye C. Johnson; M Feinholz; M Yarbrough; S Flora; Keith R. Lykke; D K. Clark;
Title: Stray-Light Correction Algorithm for Spectrographs
Published: February 01, 2003
Abstract: In this work, we describe an algorithm to correct a spectrograph's response for stray light. Two recursion relations are developed: one to correct the system response when measuring broad-band calibration sources and a second to correct the response when measuring sources of unknown radiance. The algorithm requires a detailed understanding of the effect of stray light in the spectrograph on the instrument's response. using tunable laser sources, a dual spectrograph instrument designed to measure the up-welling radiance in the ocean was characterized for stray light. A stray light correction algorithm was developed, based on the results of the laser-based measurements. The instrument's response was corrected for stray light and the effects on measured up-welling in-water radiance evaluated.
Citation: Metrologia
Volume: 40
Issue: No. 1
Keywords: and stray light;calibration;CCD;MOBY;ocean color;radiometry;spectrograph
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