| Subject |
has lens maker |
has purpose |
has latitude |
has focal ratio |
has location |
has altitude |
has mounting manufacturer |
has owner |
has mirror maker |
has acronym |
has primary mirror shape |
has mirror diameter |
has mirror type |
has aperture |
has optical design |
has comment |
has creation date |
has mount |
has longitude |
has lens type |
has synonym |
has secondary mirror shape |
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| 28-inch Visual Refractor | Gmbh | observe celestial objects | 51° 29' N | f/11.9 | Greenwich, London, England | 47 m | Ransomes and Sims | Old Royal Observatory | | | | | | 0.711 m | visual refractor | Dome under repair in 1992 | 1894 | English equatorial | 00° 00' | doublet | Greenwich refractor | |
| Hooker Telescope | | observe celestial objects | 34° 13' N | f/5, 16, 30 | Mount Wilson, Calif., US | 1742 m | FG. Pease and Fore River Shipyards | Mount Wilson Observatory | G.W. Ritchey from Saint-Gobain (Paris) | | concave paraboloid | equal to aperture (except for Schmidt which has aperture smaller than mirror diameter) | plate-glass | 2.5 m | | telescope out of service 1985-92 | 1917 | English equatorial | 118° 03' W | | 100 inch | convex hyperboloid |
| NASA Infrared Telescope Facility | | infrared work | 19° 50' N | f/2.5, 35, 120 IR | Mauna Kea, Hawaii, US | 4208 m | de Bartolomeis | Mauna Kea Observatory | KPNO Optical Shop | NASA IRTF | concave paraboloid | equal to aperture (except for Schmidt which has aperture smaller than mirror diameter) | Cer-Vit | 3.00 m | | | 1979 | English equatorial | 155° 28' W | | | convex hyperboloid |
| United Kingdom Infrared Telescope | | infrared work only | 19° 50' N | f/2.5, 36 IR | Mauna Kea, Hawaii, US | 4194 m | Hadfields Ltd. (Sheffield) | Joint Astronomy Centre | Grubb-Parsons | UKIRT | concave paraboloid | equal to aperture (except for Schmidt which has aperture smaller than mirror diameter) | Cer-Vit | 3.802 m | | | 1978 | English-yoke equatorial | 155° 28' W | | | convex hyperboloid |
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