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... > Instruments > Earth Remote Sensing Instruments > Passive Remote Sensing > Spectrometers/Radiometers > Imaging Spectrometers/Radiometers > GUVI

Preferred term

GUVI  

Definition

  • The Global Ultraviolet Imager (GUVI) is one of four instruments that constitute the TIMED spacecraft, the first mission of the NASA Solar Connections program. The TIMED spacecraft is being built by Johns Hopkins University Applied Physics Laboratory and GUVI is a joint collaboration between JHU/APL and the Aerospace Corporation. TIMED will be used to study the energetics and dynamics of the Mesosphere and lower Thermosphere between an altitude of approximately 60 to 180 kilometers GUVI is a far-ultraviolet (115 to 180 nm), scanning imaging spectrograph that provides horizon-to-horizon images in five selectable wavelength intervals, or "colors." These colors (HI 121.6 nm, OI 130.4 nm, OI 135.6 nm, and N2 Lyman-Birge-Hopfield bands 140 to 150 nm and 165 to 180 nm) are chosen in order to produce the GUVI key parameters. GUVI is based on heritage from the Special Sensor Ultraviolet Spectrographic Imager (SSUSI), an instrument previously built for Defense Meteorological Satellite Program Block 5d-3 satellites, which will fly on the DMSP Block 5D3 satellites F-16 through F-20. The instrument consists of a scan mirror feeding a parabolic telescope and Rowland circle spectrograph, with a wedge-and-strip detector at the focal plane. Additional information available at "http://guvi.jhuapl.edu/about/introduction.shtml" Group: Instrument_Details Entry_ID: GUVI Group: Instrument_Identification Instrument_Category: Earth Remote Sensing Instruments Instrument_Class: Passive Remote Sensing Instrument_Type: Spectrometers/Radiometers Instrument_Subtype: Imaging Spectrometers/Radiometers Short_Name: GUVI Long_Name: Global Ultraviolet Imager End_Group Group: Associated_Platforms Short_Name: TIMED End_Group Group: Spectral_Frequency_Information Wavelength_Keyword: Ultraviolet Number_Channels: 4 Spectral_Frequency_Coverage_Range: 115 - 180 nm End_Group Online_Resource: http://guvi.jhuapl.edu/ Sample_Image: http://guvi.jhuapl.edu/about/photek_tube.jpg Group: Instrument_Logistics Data_Rate: 8 kbps Instrument_Start_Date: 2001-12-07 Instrument_Owner: Johns Hopkins University/Applied Physics Lab End_Group End_Group (en)

Broader concept

URI

https://gcmd.earthdata.nasa.gov/kms/concept/8a7c1795-8625-484d-8f62-6d7204d211b9

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