What is the purpose of a telescope mount ?
" See also List of solar telescopes " The Einstein Tower ( " Einsteinturm " ) became operational in 1924 McMath - Pierce Solar Telescope ( 1.6 m diameter , 1961 – ) McMath - Hulbert Observatory ( 24 " / 61 cm diameter , 1941–1979 ) Swedish Vacuum Solar Telescope ( 47.5 cm diameter , 1985–2000 ) Swedish 1 - m Solar Telescope ( 1 m diameter , 2002 – ) Richard B. Dunn Solar Telescope ( 1.63 m diameter , 1969 – ) Mount Wilson Observatory Dutch Open Telescope ( 45 cm diameter , 1997 – ) The Teide Observatory hosts multiple solar telescopes , including * the 70 cm Vacuum Tower Telescope ( 1989 – ) and * the 1.5 m GREGOR solar telescope nearing completion ( , webcam ) .