1957, October— The Mark I telescope becomes operational. It tracks the carrier rocket of Sputnik 1; the only telescope in the West able to do so.[9][10]
1960s
1960, May— Lord Nuffield pays the remaining debt on the Mark I and the observatory is renamed the Nuffield Radio Astronomy Laboratories.[11]
1962— As part of a radio-linked interferometer, the Mark I identifies a new class of compact radio sources, later recognised as quasars.[12]
1968— The Mark I confirms the existence of pulsars.[16]
1968— The Mark I took part in the first transatlantic VLBI experiment in 1968, with other telescopes being those at Algonquin and Penticton in Canada.[17]
1969— The Mark I is used for the first time in a VLBI observation, with the Arecibo radio telescope in 1969.[12]
1970s
1970–1971— The Mark I is repaired and upgraded; it is renamed to the Mark IA.[15]
1972–1973— The Mark I carries out a survey of radio sources; amongst these sources was the first gravitational lens, which was confirmed optically in 1979.[18]
1976, January— storms bring winds of around 90mph which almost destroy the telescope. Bracing girders are added.[19]
1980s
1980— The Mark IA is used as part of the new MERLIN array.[12]
1982— The 42ft telescope is built, to replace the 50ft.[citation needed]
This page is based on this Wikipedia article Text is available under the CC BY-SA 4.0 license; additional terms may apply. Images, videos and audio are available under their respective licenses.