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physical object > artifact > device > instrument > telescope > electromagnetic telescope > Earth based telescope > altazimuth telescope > William Herschel Telescope

William Herschel Telescope (WHT)
subject			fact

William Herschel Telescope	has mounting manufacturer Grubb-Parsons
	has longitude 17° 53' W
	has latitude 28° 46' N
	has mirror maker Grubb-Parsons
	has mirror type Owens-Illinois Cer-Vit
	has aperture 4.2 m
	has focal ratio 02.5, 11
	has operator Royal Greenwich Observatory
	has acronym WHT
	has altitude 2332 m
	has owner Obs. del Roque de los Muchachos
	has creation date 1987
	has location La Palma, Canary Islands
	is an instance of reflector
	is an instance of optical telescope
	is an instance of altazimuth telescope
altazimuth telescope	has mounting altazimuth
reflector	has mirror diameter equal to aperture (except for Schmidt which has aperture smaller than mirror diameter)
	has secondary mirror shape
	has primary mirror shape
optical telescope	has optical design
	has reference astroweb
Earth based telescope	has temperature ambient
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

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