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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 comparison table

Subject	has comment	has reference	has location	has owner	has latitude	has lens maker	is a kind of	has optical design	has temperature	has operator	has altitude	is an instance of	has synonym	has focal ratio	has aperture	has mount	has lens type	has definition	has mounting manufacturer	has longitude	has creation date
German equatorial telescope					in degrees, minutes, seconds (N or S)		equatorial telescope		ambient		height above sea level in meters					German equatorial			the person, company or institution that constructed the mounting	in degrees, minutes, seconds (E or W)
refractor		astroweb				the person, company or institution that created the lens	optical telescope	visual refractor									doublet	A device for gathering and amplifying light by means of a lens.
Yerkes 40-inch Refractor	a focal reducer also provides an f/3 focus	astroweb	Williams Bay, Wisconsin, US	Yerkes Observatory	42° 34' N	Alvan Clark & Sons		visual refractor	ambient	University of Chicago	334 m	German equatorial telescope	40 inch	f/19.04	1.016 m	German equatorial	doublet		Warner and Swasey	88° 33' W	1897

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