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physical object > artifact > device > instrument > telescope > electromagnetic telescope > Earth based telescope > equatorial telescope |
equatorial telescope comparison table |
Subject | has secondary mirror shape | has mirror maker | has optical design | has mirror type | has aperture | has mount | has definition | has mirror diameter | has primary mirror shape |
---|---|---|---|---|---|---|---|---|---|
Bent-yoke equatorial telescope | bent-yoke equatorial | ||||||||
Cross-axis equatorial telescope | equatorial with cross-axis | ||||||||
English equatorial telescope | English equatorial | ||||||||
Fork equatorial telescope | equatorial fork | ||||||||
German equatorial telescope | German equatorial | ||||||||
Horseshoe equatorial telescope | Horseshoe equatorial | ||||||||
Polar-disk equatorial telescope | equatorial with polar-disk | ||||||||
Schmidt | none | the person, company or institution that created the mirror | Schmidt | material and other engineering details | 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. | equal to aperture (except for Schmidt which has aperture smaller than mirror diameter) | concave spheroid |
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