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physical object > artifact > device > instrument > telescope > electromagnetic telescope > Earth based telescope > equatorial telescope > English equatorial telescope > Hooker Telescope
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Hooker Telescope comparison table
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 paraboloidequal to aperture (except for Schmidt which has aperture smaller than mirror diameter)material and other engineering detailsor primary mirror diameterCassegrainreflector     convex hyperboloidTelescope 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 metersthe person, company or institution that constructed the mounting  ambient     equatorial telescope  English equatorialin degrees, minutes, seconds (E or W)   
optical telescopeastroweb              electromagnetic telescope       
Hooker Telescopeastroweb34° 13' NEnglish equatorial telescopef/5, 16, 30Mount Wilson, Calif., US1742 mFG. Pease and Fore River ShipyardsMount Wilson ObservatoryG.W. Ritchey from Saint-Gobain (Paris)ambientconcave paraboloidequal to aperture (except for Schmidt which has aperture smaller than mirror diameter)plate-glass2.5 m  telescope out of service 1985-921917English equatorial118° 03' W100 inchconvex hyperboloid 

Next CassegrainLarge Binocular Telescope    UpCassegrain, English equatorial telescope, optical telescope    Previous CassegrainGeorge Ellery Hale Telescope