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. K. Tobiska

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

15 Scopus citations

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.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages467-478
Number of pages12
ISBN (Print)0819415901, 9780819415905
DOIs
StatePublished - 1994
Externally publishedYes
EventOptical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research - San Diego, CA, USA
Duration: Jul 25 1994Jul 27 1994

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2266
ISSN (Print)0277-786X

Conference

ConferenceOptical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research
CitySan Diego, CA, USA
Period07/25/9407/27/94

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