Optical Astronomy Sites Telescopes & Associated Archives The Worlds Largest Optical Telescopes NOAO NOAO CTIO (Cerro Tololo Inter-American Observatory) NOAO KPNO (Kitt Peak National Observatory) NOAO WIYN Observatory NOAO NSO (National Solar Observatory) IRAF support services USNO Flagstaff Station, Image and Cataloque Archive CFA Harvard-Smithsonian Center for Astrophysics CFA Whipple Observatory CFA Multiple Mirror Telescope Observatory CFA Oak Ridge Observatory Mount Wilson Observatory STScI Hubble Space Telescope RGO Royal Greenwich Observatory Isaac Newton Group of Telescopes, La Palma LUND Obs. and NOT Nordic Opt. Tel. SUSSEX Astronomy SAO Sternberg Astronomical Institute MAJDANAK Observatory at Uzbekistan Astro Space Center Astronomy Group U. of Pittsburgh TARTU Astrophysical Observatory AIP Astrophysikalisches Institut Potsdam NRAO National Radio Astronomy Observatory