Ritchey–chrétien telescope

Discovery Channel Telescope Hexapod-Telescope Galileo National Telescope New Technology Telescope Spitzer Space Telescope Hubble Space Telescope Search for habitable Planets EClipsing ULtra-cOOl Stars Nicholas U. Mayall Telescope Pan-STARRS1 Long Range Reconnaissance Imager VISTA Rapid Eye Mount telescope BTA-6 Nordic Optical Telescope