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The Anglo-Australian was the last of a series of 4m-class, equatorially-mounted telescopes that were built in the mid-1970s and it was the first to operate under full computer control. The telescope was designed to have a field one degree across at its prime focus, 'wide angle' by astronomical standards. However, it has since been expanded to a two degree field, but not for imaging. When the telescope is used as a camera it acts as a giant reflecting 'lens', 4m in diameter working at F/3.3 with a focal length of 12.7m. The short tube at the end of the telescope is the prime focus, where the plates used for the images listed below were made, using innovative photographic techniques and a 3-colour additive process.
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