Avantes introduced two cosine correctors for solar measurement applications. The CC-UV/VIS/NIR-8MM has an 8 mm active area and the CC-UV/VIS/NIR-5.0 is a special cosine corrector with 5° angular field of view.
Solar monitoring can be achieved using a pyranometer, pyrheliometer or a spectroradiometer solution from Avantes. One of the many spectroradiometer configurations offered by Avantes, is the solar system which is a 4 channel system with two redundant systems each measuring from 200-2500nm. One of the systems measures the direct sun radiation through the CC-UV/VIS/NIR-5.0 cosine corrector with a 5 degrees acceptance aperture and is normally affixed to a sun tracker system. The second spectrometer system in the solar setup measures total radiation (flux) with a standard CC-VIS/NIR cosine corrector.