Subject |
has reference |
has latitude |
is an instance of |
has focal ratio |
has location |
has altitude |
has mounting manufacturer |
has owner |
has mirror maker |
has temperature |
has primary mirror shape |
has mirror diameter |
has mirror type |
has aperture |
has optical design |
is a kind of |
has comment |
has creation date |
has mount |
has longitude |
has synonym |
has secondary mirror shape |
has definition |
Cassegrain | | | | | | | | | the person, company or institution that created the mirror | | concave paraboloid | equal to aperture (except for Schmidt which has aperture smaller than mirror diameter) | material and other engineering details | or primary mirror diameter | Cassegrain | reflector | | | | | | convex hyperboloid | 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. |
English equatorial telescope | | in degrees, minutes, seconds (N or S) | | | | height above sea level in meters | the person, company or institution that constructed the mounting | | | ambient | | | | | | equatorial telescope | | | English equatorial | in degrees, minutes, seconds (E or W) | | | |
optical telescope | astroweb | | | | | | | | | | | | | | | electromagnetic telescope | | | | | | | |
Hooker Telescope | astroweb | 34° 13' N | English equatorial telescope | 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) | ambient | 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 | |