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physical object > artifact > device > instrument > telescope > electromagnetic telescope > Earth based telescope > equatorial telescope > Fork equatorial telescope > Hiltner Telescope

Hiltner 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
Fork 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			equatorial fork	in degrees, minutes, seconds (E or W)
optical telescope	astroweb															electromagnetic telescope
Ritchey-Chrétien									the person, company or institution that created the mirror		concave hyperboloid	equal to aperture (except for Schmidt which has aperture smaller than mirror diameter)	material and other engineering details	or primary mirror diameter	Ritchey-Chrétien	reflector						convex hyperboloid	A system of two mirrors, aspherized to give an image at the secondary (Cassegrain) focus free from spherical aberration and coma.
Hiltner Telescope	astroweb	31° 57' N	Fork equatorial telescope	f/2.07, 13.5	Kitt Peak, Arizona, US	1938 m	DFM Engineering, L & F Industries	Michigan-Dartmouth-MIT Obs.	Contraves (USA)	ambient	concave hyperboloid	equal to aperture (except for Schmidt which has aperture smaller than mirror diameter)	Cer-Vit	2.34 m			Mirrors repolished 1991	1986	Equatorial fork, friction-disk drives	111° 37' W	Hiltner 2.3 m	convex hyperboloid

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