It was destroyed during the third flight, but was rebuilt and completed a fourth flight in 2010.[10] InFOCμS 2004– Hard X-ray telescope with a 49 cm2 collecting area.[11] HEFT 2005 Hard X-ray telescope that uses grazing-incidence optics.[12] Sunrise 2009– 1 m ultraviolet telescope with image stabilization and adaptive optics for observing the Sun.[13] PoGOLite 2011– Telescope for polarised hard X-rays and soft gamma-rays.[14] Spider 2015– Submillimeter telescope searching for primordial gravitational waves.[15]