Thermosphere-Ionsphere-Mesosphere Energetics and Dynamics (TIMED) Solar EUV Experiment

Thomas N. Woods; Gary J. Rottman; Raymond G. Roble; O. R. White; Stanley C. Solomon; George M. Lawrence; Judith Lean; W. Kent Tobiska

doi:10.1117/12.187584

30 September 1994 Thermosphere-Ionsphere-Mesosphere Energetics and Dynamics (TIMED) Solar EUV Experiment

Thomas N. Woods, Gary J. Rottman, Raymond G. Roble, O. R. White, Stanley C. Solomon, George M. Lawrence, Judith Lean, W. Kent Tobiska

Author Affiliations +

Proceedings Volume 2266, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research; (1994) https://doi.org/10.1117/12.187584
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

The Solar EUV Experiment (SEE) selected for the NASA thermosphere, ionosphere, and mesosphere energetics and dynamics (TIMED) mission will measure the solar vacuum ultraviolet (VUV) spectral irradiance from 0.1 to 200 nm. To cover this wide spectral range two different types of instruments are used: a grating spectrograph for spectra above 25 nm and an avalanche photodiode for spectra below 25 nm. As part of the in-flight calibration plan, silicon XUV photodiodes with thin film filters are used as stable broadband photometers between 0.1 and 40 nm. In addition, redundant spectrograph and avalanche photodiode capabilities provide calibration checks on the time scale of a month, and annual rocket underflight measurements provide absolute calibration checks traceable to NIST photometric standards. All three types of instruments have been developed and flight proven as part of a NASA solar EUV irradiance rocket experiment.

Citation Download Citation

Thomas N. Woods, Gary J. Rottman, Raymond G. Roble, O. R. White, Stanley C. Solomon, George M. Lawrence, Judith Lean, and W. Kent Tobiska "Thermosphere-Ionsphere-Mesosphere Energetics and Dynamics (TIMED) Solar EUV Experiment", Proc. SPIE 2266, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research, (30 September 1994); https://doi.org/10.1117/12.187584

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