Welcome to GUVI!


Check out our new GUVI website

Please visit our new and improved GUVI website, which is designed to be more like

our other UV sensor (SSUSI) page.


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.


  • Instrument Fabrication

  • TIMED Construction

Latest Results

see more data products see more images in the gallery