LASCO Large Angle and Spectrometric Coronagraph - Wikipedia, the free encyclopediahttp://en.wikipedia.org/wiki/LASCO_Large_Angle_and_Spectrometric_Coronagraph
The Large Angle and Spectrometric Coronagraph (LASCO) is one of a number of instruments aboard the Solar and Heliospheric Observatory satellite (SOHO). LASCO consists of three solar coronagraphs with nested fields of view.