Concept information
Preferred term
EGS
Definition
- The EGS is a Rowland-circle grating spectrograph that makes solar extreme ultraviolet (EUV) spectral irradiance measurements. The original EGS made measurements from 30 to 115 nm with 0.1 nm spectral resolution. This EGS version made measurements in 1988, 1989, 1992, 1993, and 1994, and it was lost during the failure of the Conestoga / METEOR satellite launch. The new EGS, the TIMED protoflight version, covers the spectral range from 20 to 200 nm with 0.2 nm spectral resolution. [Summary provided by UCAR.] (en)
Broader concept
URI
https://gcmd.earthdata.nasa.gov/kms/concept/2cdeb7b8-d89e-4caf-b79b-76cff46a6a66
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