@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ns0: <http://gcmd.gsfc.nasa.gov/kms#> .

<https://gcmd.earthdata.nasa.gov/kms/concept/b5e4912d-3224-4d7b-924c-a697677775c6>
  skos:prefLabel "Ultraviolet Instruments"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/dab33678-76fd-4727-9489-dce83edecbbc> .

<https://gcmd.earthdata.nasa.gov/kms/concept/dab33678-76fd-4727-9489-dce83edecbbc>
  ns0:resource [ ] ;
  ns0:altLabel [ ] ;
  skos:definition """[Source: Extreme ultraviolet Variabilty Experiment (EVE) team home page, http://lasp.colorado.edu/eve/ ]

The Extreme ultraviolet Variabilty Experiment (EVE) is designed to measure the solar extreme ultraviolet (EUV) irradiance. The EUV radiation includes the 0.1-105 nm range, which provides the majority of the energy for heating Earth's thermosphere and creating Earth's ionosphere (ionized plasma). This wide spectral range requies the use of multiple channels. Some key requirements for EVE are to measure the solar EUV irradiance spectrum with 0.1 nm spectral resolution and with 20 sec cadence. These drive the EVE design to include grating spectrographs with array detectors so that all EUV wavelengths can be measured simultaneously. Another key requirement for EVE is to measure the EUV radiation with an accuracy of 25% or better, thus on-board calibration channels are included to go with underflight calibration experiments to be conducted during the SDO mission.


Group: Instrument_Details
   Entry_ID: EVE-SDO
   Group: Instrument_Identification
      Instrument_Category: Solar/Space Observing Instruments
      Instrument_Class: Ultraviolet Instruments
      Short_Name: EVE-SDO
      Long_Name: Extreme ultraviolet Variability Experiment on Solar Dynamics Observatory
   End_Group
   Group: Associated_Platforms
      Short_Name: SDO
   End_Group
   Group: Spectral_Frequency_Information
      Wavelength_Keyword: Ultraviolet
      Spectral_Frequency_Coverage_Range: 0.1 nm -105 nm
   End_Group
   Online_Resource: http://lasp.colorado.edu/eve/
   Online_Resource: http://sdo.gsfc.nasa.gov/mission/instruments.php
   Sample_Image: http://lasp.colorado.edu/eve/images/instrument/EVE_FrontOpen_Labels_sm.jpg
   Creation_Date: 2009-04-24
   Group: Instrument_Logistics
      Instrument_Owner: USA/NASA
   End_Group
End_Group"""@en ;
  skos:prefLabel "EVE-SDO"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments> ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/b5e4912d-3224-4d7b-924c-a697677775c6> ;
  a skos:Concept .