coronagraph noun1 •A telescope that has an attachment which blocks out the direct light from the Sun or other star, allowing examination of the corona and the detection of exoplanets.The crosscalibration between LASCO C2 and the STEREO coronagraphs allows, for the first time, the potential use of multi-spacecraft coronagraph data for tomography and for CME analysis.. — 2015 formscoronagraphs
