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physical object > artifact > device > instrument > telescope > electromagnetic telescope > Earth based telescope > altazimuth telescope > Telescopio Nazionale Galileo
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Telescopio Nazionale Galileo comparison table
Subject has reference has location has owner has latitude has secondary mirror shape has mirror maker is a kind of has optical design has temperature has mirror type has altitude is an instance of has synonym has focal ratio has aperture has mount has mounting manufacturer has definition has longitude has mirror diameter has primary mirror shape has creation date
altazimuth telescope   in degrees, minutes, seconds (N or S)  Earth based telescope ambient height above sea level in meters    altazimuththe person, company or institution that constructed the mountingA form of mounting similar to that of a radar which allows the telescope tube to be moved horizontally (by rotation in azimuth or compass direction) and vertically (by rotation in altitude or elevation). To follow a star the telescope must be adjusted simultaneously in both axes. (also called alt-az)in degrees, minutes, seconds (E or W)   
optical telescopeastroweb     electromagnetic telescope               
Ritchey-Chrétien    convex hyperboloidthe person, company or institution that created the mirrorreflectorRitchey-Chrétien material and other engineering details    or primary mirror diameter  A system of two mirrors, aspherized to give an image at the secondary (Cassegrain) focus free from spherical aberration and coma. equal to aperture (except for Schmidt which has aperture smaller than mirror diameter)concave hyperboloid 
Telescopio Nazionale GalileoastrowebLa Palma, Canary IslandsObs. del Roque de los Muchachos28° 45' Nconvex hyperboloidZeiss  ambientZerodur2370 maltazimuth telescopeGalileof/2.5, 6, 113.58 maltazimuththe person, company or institution that constructed the mounting 17° 54'Wequal to aperture (except for Schmidt which has aperture smaller than mirror diameter)concave hyperboloid(1998)

Next altazimuth telescopeVery Large Telescope    Upaltazimuth telescope, optical telescope, Ritchey-Chrétien    Previous altazimuth telescopeSubaru Telescope