Articles | Volume 16, issue 1
Research article
17 Jan 2023
Research article |  | 17 Jan 2023

Performance and polarization response of slit homogenizers for the GeoCarb mission

Sean Crowell, Tobias Haist, Michael Tscherpel, Jérôme Caron, Eric Burgh, and Berrien Moore III

Data sets

Slit Homogenizer Measurements S. Crowell

Model code and software

Slit Homogenizer Measurements S. Crowell


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Short summary
Variations in brightness in radiance measurements cause errors that can be mitigated with hardware that scrambles the pattern of the incoming light. GeoCarb took this route to minimize this source of errors, but lab testing determined that the solution chosen was too sensitive to the the polarization of the incoming light. Modeling found that this was a predictable result of using gold coatings in the design, which is typical of spaceflight optical instruments.