The Isaac Newton Telescope, with its 2.54 metre primary mirror, has helped discover the brightest objects in the Universe: a quasar four to five million billion times brighter than the Sun was discovered in 1998. The ING?s Wide Field Survey (WFS) programme makes use of the Wide Field Camera to carry out a range of scientific programmes. The telescope is located at the Roque de los Muchachos Observatory on La Palma (Canary Islands, Spain).