ocr: VIRGO INSTRUMENT VIRGO contains two different active-cavity radiometers for monitoring the solar constant, two three-channel sunphotometers for the measurement of the spectral irradiance at 402,500, and 862 nm with a bandwidth of 5 nm, and low-resolution imager Luminosity Oscillation Imager) LOI - with 12 scientific' and four guiding pixels, for measuring the radiance distribution over the solar disk at 500 nm. VIRGOismade out of the various subunits SPM built by the World Radiation Center of Davos, CH. LOI - built by the Space Sciences Department of the European Space Agency. PMO6-V built by ...
