Optical calibration of the Global Ultraviolet Imager (GUVI)

David C. Humm; Bernard S. Ogorzalek; Michael J. Elko; Daniel Morrison; Larry J. Paxton

doi:10.1117/12.364144

28 September 1999 Optical calibration of the Global Ultraviolet Imager (GUVI)

David C. Humm, Bernard S. Ogorzalek, Michael J. Elko, Daniel Morrison, Larry J. Paxton

Proceedings Volume 3818, Ultraviolet Atmospheric and Space Remote Sensing: Methods and Instrumentation II; (1999) https://doi.org/10.1117/12.364144
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

The Global Ultraviolet Imager of the NASA Thermosphere, Ionosphere, and Mesosphere Energetics and Dynamics mission has been calibrated at the Optical Calibration Facility of the Applied Physics Laboratory. This spectrographic imager has a 0.74 degree(s) X 11.6 degree(s) field-of-view, a 140 degree(s) X 11.6 degree(s) field-of-regard and collects data in 176 wavelength bins in the spectral range from 120 - 180 nm. The calibration of this far ultraviolet instrument requires continuously variable wavelengths and angles within a high- vacuum system from the light source to the instrument. An optical calibration facility has been developed providing a bright, uniform, wavelength-selectable, collimated light beam, which is mapped in situ to correct for intensity drifts in the lamp. The facility design and the calibration procedure are discussed.

Citation Download Citation

David C. Humm, Bernard S. Ogorzalek, Michael J. Elko, Daniel Morrison, and Larry J. Paxton "Optical calibration of the Global Ultraviolet Imager (GUVI)", Proc. SPIE 3818, Ultraviolet Atmospheric and Space Remote Sensing: Methods and Instrumentation II, (28 September 1999); https://doi.org/10.1117/12.364144

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