major highways. A new 6 ft (1.8 m) parabolic dish solar flux telescope was built in 1960, operating in parallel before taking over duties from the Goth Hill instrument in 1962. In 1964 an identical instrument was installed at the Dominion Radio Astrophysical Observatory (DRAO) in British Columbia. This was followed by a more powerful version of the waveguide instrument, this time focused by a series of thirty-two 10 ft (3 m) dishes arranged over a 700 ft (215 m) waveguide, which opened in 1966. The ARO was greatly expanded in 1966 with the opening of the 150 ft (46 m) deep-space telescope. This was a major research site through the 1960s and 70s, although limitations in its design made it see less use in the 1980s. For some time this instrument was joined by a smaller 18 m telescope originally located at the David Dunlap Observatory outside Toronto, operated by the University of Toronto. The original solar observatories remained in use until 1990 when funding drawdowns at the NRC forced the closure of the entire Algonquin site. In 1991 the 1.8 m dish was moved to the DRAO as a backup instrument. Covington's work led to other solar-related discoveries. Observations in 1969 led to the realization that certain types of major sunspot breakouts were preceded by a particular type of radio signal, which allowed advanced prediction of upcoming solar storms. As other teams also started studying the solar flux they noticed that the different teams all came to different conclusions about the total flux, due to differences in the instruments and other effects. Covington worked on an effort to correlate these measurements and solve a single flux number, which was published in 1972. He also played a role in the construction of the Indian River Observatory, an amateur built 200 m interferometer. Retirement Covington remained director of the ARO until he retired in 1978. He died in 2001 in Kingston, Ontario, at the age of 88. Legacy In 2003, the Dominion Radio Astrophysical Observatory named their new main building in Covington's honour. The Herzberg Astronomy & Astrophysics Research Centre of the National Research Council of Canada established the Covington Fellowship in 2008. Covington had many hobbies including a fondness for rare books, many of which have been donated to Queen's University in the Riche-Covington collection. Notes The exact location of "Goth Hill" is not known, as this term does