Stray-Light Correction Algorithm for Spectrographs

Published

February 1, 2003

Author(s)

Steven W. Brown, Bettye C. Johnson, M Feinholz, M Yarbrough, S Flora, Keith R. Lykke, D K. Clark

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

Pub Type

Journals

Keywords

and stray light, calibration, CCD, MOBY, ocean color, radiometry, spectrograph

Citation

Brown, S. , Johnson, B. , Feinholz, M. , Yarbrough, M. , Flora, S. , Lykke, K. and Clark, D. (2003), Stray-Light Correction Algorithm for Spectrographs, Metrologia (Accessed April 18, 2025)