[DOC] [TLE] Yerkes Observatory - Wikipedia [PAR] 1897 photo of the 100 cm (40 in) refractor at the Yerkes Observatory. 2006 photo 
of the 100 cm (40 in) refractor at the Yerkes Observatory. A photo of the Messier 
51 galaxy taken on June 3, 1902 at the Yerkes Observatory. Yerkes Observatory 
is an astronomical observatory in Williams Bay, Wisconsin operated by the ... 
Yerkes Observatory's 100 cm (40 in) refracting telescope was built by the... [DOC] [TLE] Yerkes Observatory - Home [PAR] 373 W. Geneva St, Williams Bay WI 53191 (Latitude 42 34.2, Longitude -88 33.4) 
... purchased for the Yerkes 40-inch and 24-inch telescope viewing programs. [DOC] [TLE] Yerkes Observatory - Visit [PAR] Sep 7, 2016 ... 373 W. Geneva St, Williams Bay WI 53191 (Latitude 42 34.2, ... dome at the 40-
inch refractor, still the largest lens-type telescope in the world. [DOC] [TLE] Yerkes Observatory: Home of Largest Refracting Telescope [PAR] Aug 15, 2014 ... Yerkes Observatory is a 77-acre facility in Williams Bay, Wisconsin, that houses a 
40-inch (100 centimeters) telescope, the largest refracting... [DOC] [TLE] Yerkes Observatory - Visit Lake Geneva [PAR] Known as the birthplace of modern astrophysics, Yerkes Observatory is open to 
the public from 9:45 ... the 90-foot dome at the 40-inch refractor, still the largest 
lens-type telescope in the world. ... 373 W. Geneva Street, Williams Bay, WI 
53191. [DOC] [TLE] Telescope: Yerkes 40-inch Refractor - Amazing Space [PAR] Yerkes was a convicted embezzler with a reputation for dishonest deals, but he 
liked ... but insisted repeatedly that the telescope had to be the largest in the 
world. ... Hale also felt mountaintop observatories were prone to storms, which 
could ... Map of Williams Bay, Wisconsin, where the Yerkes 40 inch refractor was 
located. [DOC] [TLE] Yerkes Telescope | StarDate Online [PAR] Aug 18, 2011 ... Yerkes Observatory in Wisconsin is home to the world's largest refractor ... Many 
of these telescopes, which use a series of lenses (instead of mirrors) to ... houses 
the Yerkes Observatory 40-inch refractor, largest lensed telescope in the world. ... 
Month (31 days), $8.00. Year, $30.00. Type. New subscriber. [DOC] [TLE] Yerkes Observatory (Williams Bay, WI): Top Tips ... - TripAdvisor [PAR] Yerkes Observatory, Williams Bay: See 131 reviews, articles, and 49 photos of 
Yerkes ... Traveler type ... for our anniversary and decided to go for the 40 inch 
refracting telescope program! ... They have a very interesting talk about both the 
observatory and its history to go along with the world's largest refracting 
telescope. [DOC] [TLE] Yerkes Observatory | observatory, Williams Bay, Wisconsin, United ... [PAR] It contains the largest refracting telescope (40 inches [1 metre]) in the world. ... 
lens of the Yerkes Observatory, Williams Bay, Wis., the largest refractor lens in 
the... [DOC] [TLE] Optical Telescopes - Teach Astronomy [PAR] scrollHeight) + "px"; } Optical TelescopesThe first type of telescope to be built was 
the refractor. It uses a lens to bend, or refract, light rays to a focus. ... ever built 
was the 40-inch telescope at Yerkes Observatory in Wisconsin, opened in 1897. 
... The largest refractor ever built had a diameter of 1 meter, whereas 
astronomical... [DOC] [TLE] Astronomical_Instruments [PAR] It is the shape of the glass, or lens, which makes things look bigger. Water drops 
will do the same ... This means that there are two basic types of telescope; ... The 
largest refractor telescope that has ever been constructed is at the Yerkes 
Observatory in Wisconsin. It is 40 ... The largest refractor (Yerkes) is 40 inches 
across. [DOC] [TLE] Yerkes Observatory - | Best of Lake Geneva [PAR] Yerkes Observatory is open for free public tours every Saturday throughout the 
year. ... You'll see the the famed 40-inch Refractor, the world's biggest lens-type 
telescope, and its 73-foot diameter elevator floor. ... Williams Bay,, WI 53191. [DOC] [TLE] Introduction - Building the Giant Segmented

Question: With a 40-inch lens, a telescope at the Yerkes Observatory in Wisconsin is the largest of this type
Answer: Refracting Telescope