| Subject |
has purpose |
has reference |
has location |
has owner |
has latitude |
has secondary mirror shape |
has mirror maker |
is a kind of |
has temperature |
has acronym |
has mirror type |
has altitude |
is an instance of |
has focal ratio |
has aperture |
has mount |
has mounting manufacturer |
has definition |
has longitude |
has mirror diameter |
has primary mirror shape |
has creation date |
|---|
| Cassegrain | observe celestial objects | | | | | convex hyperboloid | the person, company or institution that created the mirror | reflector | | | material and other engineering details | | | | or primary mirror diameter | | | Telescope devised by Cassegrain in which an auxiliary convex mirror reflects the magnified image, upside down, through a hole in the center of the main objective mirror - i.e., through the end of the telescope itself. It was, however, no improvement on the gregorian telescope invented probably slightly earlier. | | equal to aperture (except for Schmidt which has aperture smaller than mirror diameter) | concave paraboloid | |
| English equatorial telescope | observe celestial objects | | | | in degrees, minutes, seconds (N or S) | | | equatorial telescope | ambient | | | height above sea level in meters | | | | English equatorial | the person, company or institution that constructed the mounting | | in degrees, minutes, seconds (E or W) | | | |
| optical telescope | observe celestial objects | astroweb | | | | | | electromagnetic telescope | | | | | | | | | | | | | | |
| United Kingdom Infrared Telescope | infrared work only | astroweb | Mauna Kea, Hawaii, US | Joint Astronomy Centre | 19° 50' N | convex hyperboloid | Grubb-Parsons | | ambient | UKIRT | Cer-Vit | 4194 m | English equatorial telescope | f/2.5, 36 IR | 3.802 m | English-yoke equatorial | Hadfields Ltd. (Sheffield) | | 155° 28' W | equal to aperture (except for Schmidt which has aperture smaller than mirror diameter) | concave paraboloid | 1978 |
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