Proba 2 Large Yield RAdiometer (LYRA)

The Large Yield RAdiometer (LYRA) is a solar X and UV filter photometer that monitors the solar irradiance in four selected ultraviolet bands: the Lyman-alpha line at 121.6 nm, the 200-220 nm Herzberg continuum range, the 17-80 nm aluminium filter range and the 6-20 nm zirconium filter range.

大型产量辐射计（LYRA）是一款监测所选紫外线波段太阳辐照度的X射线和紫外线滤光光度计，包括121.6纳米处的莱曼-α线、200-220纳米赫兹伯格连续谱范围、17-80纳米铝滤光片范围以及6-20纳米锆滤光片范围。