Before revision: The Sun Watcher using Active Pixel System Detector and Image Processing (SWAP) telescope is a compact EUV imager on board the PROBA-2 mission that will observe the Sun in extreme ultraviolet (EUV).
After revision: The Sun Watcher using Active Pixel System Detector and Image Processing (SWAP) telescope is a compact extreme-ultraviolet (EUV) imager on board the PROBA-2 mission that will observe the Sun in extreme ultraviolet (EUV).