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physical object > artifact > device > instrument > telescope > electromagnetic telescope > Earth based telescope > equatorial telescope > Fork equatorial telescope > Oschin 48-inch Telescope |
Oschin 48-inch Telescope comparison table |
Subject | has comment | has location | has owner | has latitude | has secondary mirror shape | has mirror maker | is a kind of | has optical design | has mirror type | has altitude | is an instance of | has synonym | has focal ratio | has aperture | has mount | has definition | has mounting manufacturer | has longitude | has mirror diameter | has primary mirror shape | has creation date |
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Fork equatorial telescope | in degrees, minutes, seconds (N or S) | equatorial telescope | height above sea level in meters | equatorial fork | the person, company or institution that constructed the mounting | in degrees, minutes, seconds (E or W) | |||||||||||||||
Schmidt | in degrees, minutes, seconds (N or S) | none | the person, company or institution that created the mirror | equatorial telescope | Schmidt | material and other engineering details | height above sea level in meters | or primary mirror diameter | equatorial | A type of reflecting telescope (more accurately, a large camera) in which the coma produced by a spherical concave mirror is compensated for by a thin correcting lens placed at the opening of the telescope tube. The Schmidt has a usable field of 0°.6. | the person, company or institution that constructed the mounting | in degrees, minutes, seconds (E or W) | equal to aperture (except for Schmidt which has aperture smaller than mirror diameter) | concave spheroid | |||||||
Oschin 48-inch Telescope | a new achromatic corrector plate (Grubb-Parsons) was installed in about 1984 | Palomar Mountain, Calif., US | Palomar Observatory | 33° 21' N | none | Don O. Hendrix | Schmidt | material and other engineering details | 1706 m | Fork equatorial telescope | Oschin Schmidt | f/2.47 | 1.24 m | equatorial fork | California Institute of Technology | 116° 51' W | 1.83 m | concave spheroid | 1948 |
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