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Fork equatorial telescope comparison table

Subject	has reference	has latitude	has focal ratio	has unvignet$1 corrected field of view	has location	has altitude	has mounting manufacturer	has owner	has has mirror diameter	has mirror maker	has scale	has primary mirror shape	has mirror diameter	has diameter corrector plate	has mirror type	has focal length Cassegrain	has aperture	has radius of curvature of focal surface	has optical design	has focal point distance behind surface of primary	has comment	has diameter secondary	has creation date	has operator	has diameter hole in primary	has mount	has longitude	has image	has vignetting at 63 arcmin field angle	has distance between mirror	has synonym	has secondary mirror shape	has focal length primary	has diameter primary
2-meter Telescope		50° 59' N	f/3.00		Tautenberg, Germany	331 m	Zeiss (Jena)	Karl Schwarzschild Observatorium	2 m	Zeiss (Jena)		concave spheroid	equal to aperture (except for Schmidt which has aperture smaller than mirror diameter)		Schott ZK-7 glass		1.34 m		Schmidt		can also be used in Cassegrain and coude modes		1960			equatorial fork	11° 43'E				Tautenberg Schmidt	none
Byurakan 2.6-meter Reflector	astroweb	40° 20' N	f/3.6, 16, 40		Mount Aragatz, Armenia	1500 m	LOMO	Byurakan Observatory		the person, company or institution that created the mirror			equal to aperture (except for Schmidt which has aperture smaller than mirror diameter)		material and other engineering details		2.64 m						1976			equatorial fork	44° 18' E				Byurakan 102 inch
C. Donald Shane Telescope	astroweb	37° 21' N	f/5, 17, 36		Mount Hamilton, Calif., US	1290 m	Judson Pacific-Murphy Corp.	Lick Observatory		Don O. Hendrix		concave paraboloid	equal to aperture (except for Schmidt which has aperture smaller than mirror diameter)		Pyrex		3.05 m						1959			equatorial fork	121° 38' W				120 inch	convex hyperboloid
Calar-Alto-Schmidtspiegel		37° 13' N	f/3.0		Calar Alto, Spain	2168 m	Grubb-Parsons	Calar Alto Observatory		Zeiss (Jena)		concave spheroid	1.2 m		material and other engineering details		0.80 m		Schmidt		Tube and optics moved from Hamburg, Germany, where the instrument had been in use since 1955		1980			equatorial fork	2° 32' W				Calar Alto Schmidt	none
Hiltner Telescope	astroweb	31° 57' N	f/2.07, 13.5		Kitt Peak, Arizona, US	1938 m	DFM Engineering, L & F Industries	Michigan-Dartmouth-MIT Obs.		Contraves (USA)		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
Irénée du Pont Telescope	astroweb	29° 00' S	f/3.0	1.45 degrees	Las Campanas, Chile	2282 m	Bruce H. Rule	Las Campanas Observatory		Donald A. Loomis	0.0924 mm/arcsec	concave hyperboloid	equal to aperture (except for Schmidt which has aperture smaller than mirror diameter)	741 mm	fused-silica	19050 mm	2.54 m	9.042 mm		1013 mm		953 mm	1976	Carnegie Inst. of Washington	826 mm	equatorial fork	70° 42' W		3%	5153 mm	du Pont 100 inch	convex hyperboloid	7620 mm	2540 mm
Kiso Schmidt Telescope		35° 48' N	f/3.1		Kiso, Japan	1130 m	Nikon	Kiso Observatory		Nikon		concave spheroid	1.5 m		Cer-Vit		1.05 m		Schmidt		alternate secondary mirror offers an f/22.6 Cass. focus		1975	Univ. of Tokyo		equatorial fork	137° 38' E					none
Oschin 48-inch Telescope		33° 21' N	f/2.47		Palomar Mountain, Calif., US	1706 m	California Institute of Technology	Palomar Observatory		Don O. Hendrix		concave spheroid	1.83 m		material and other engineering details		1.24 m		Schmidt		a new achromatic corrector plate (Grubb-Parsons) was installed in about 1984		1948			equatorial fork	116° 51' W				Oschin Schmidt	none
Shajn 2.6-m Reflector	astroweb	44° 44' N	f/3.8, 15.7, 16.4, 40		Nauchny, Ukraine	height above sea level in meters	the person, company or institution that constructed the mounting	Crimean Astrophysical Obs.		the person, company or institution that created the mirror			equal to aperture (except for Schmidt which has aperture smaller than mirror diameter)		material and other engineering details		2.64 m						1960			equatorial fork	34° 00' E				Crimean 102 inch

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