It was active from 2009 to 2013, and was the largest infrared telescope ever launched, carrying a 3.5-metre (11.5 ft) mirror and instruments sensitive to the far infrared and submillimetre wavebands (55–672 µm).
Itu aktif 2009-2013, dan merupakan teleskop inframerah terbesar yang pernah diluncurkan, Membawa cermin 3,5 meter tunggal (11,5 ft) dan instrumen sensitif terhadap inframerah jauh dan wavebands submillimetre (55-672 mm).