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physical object > artifact > device > instrument > telescope > electromagnetic telescope > Earth based telescope > equatorial telescope > German equatorial telescope > Yerkes 40-inch Refractor

Yerkes 40-inch Refractor (40 inch)
subject			fact

Yerkes 40-inch Refractor	has comment a focal reducer also provides an f/3 focus
	has mounting manufacturer Warner and Swasey
	has longitude 88° 33' W
	has latitude 42° 34' N
	has lens maker Alvan Clark & Sons
	has aperture 1.016 m
	has focal ratio f/19.04
	has synonym 40 inch
	has operator University of Chicago
	has altitude 334 m
	has owner Yerkes Observatory
	has creation date 1897
	has location Williams Bay, Wisconsin, US
	is an instance of refractor
	is an instance of German equatorial telescope
German equatorial telescope	has mounting German equatorial
refractor	has lens type doublet
	has optical design visual refractor
optical telescope	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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