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Keck
subject			fact

Keck	has comment Uses 36 hexagonal mirror segments. Plans include using both Keck I and Keck II as an optical interferometer
	has mounting manufacturer TIW Systems
	has number of segments 36
	has mirror maker Itek, Tinsley
	has mirror type Zerodur
	has mirror diameter 9.82 m
	has focal ratio f/1.75, 15, 25 IR
	has operator Univ. of California and Calif. Institute of Technology
	has owner W.M. Keck Observatory
	has creation date 1991
	has location Mauna Kea, Hawaii, US
	is a kind of segmented mirror telescope
	is a kind of optical telescope
	is a kind of altazimuth telescope
	is a kind of Ritchey-Chrétien
altazimuth telescope	has mounting altazimuth
Ritchey-Chrétien	has secondary mirror shape convex hyperboloid
	has primary mirror shape concave hyperboloid
	has optical design Ritchey-Chrétien
optical telescope	has optical design
	has reference astroweb
Earth based telescope	has longitude in degrees, minutes, seconds (E or W)
	has latitude in degrees, minutes, seconds (N or S)
	has altitude height above sea level in meters
	has temperature ambient
reflector	has aperture or primary mirror diameter
telescope	has wavelength sensitivity
	has angular resolving power
	has effective diameter
	has purpose observe celestial objects
artifact	has creator
physical object	has angular momentum
	has mass
	has velocity
	has momentum
	has volume
	has extent
	has material

Kinds of Keck :

• Keck I (6 facts)
• Keck II (6 facts)

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