WORLDKINGS - Worldkings News - America – Yerkes Observatory: The largest refracting telescope ever built in the world

03-12-2019

(Worldkings.org) Yerkes Observatory houses the largest refracting telescope ever built in the world.

Yerkes Observatory, in Williams Bay, Wisconsin, houses the largest refracting telescope ever built for astronomical research, with a main lens that's 40 inches (1.02 meters) in diameter. 

 

The observatory is a facility of the University of Chicago and is housed in an ornate Romanesque-style building located on a 77-acre park-like site near Lake Geneva, Wisconsin, about a two-hour drive northwest of downtown Chicago. It opened in 1897 and was closed to almost all activity in 2018.

The Yerkes refracting telescope was gigantic for its time, with a main tube that's 60 feet long (18 m). A refracting telescope is one of the two main types of astronomical telescopes. A refractor has the familiar spyglass design, which operates by gathering light through a large len at one end of a long tube and focusing the light on an eyepiece, camera or other instrument at the opposite end. 

According to space.com

 

The observatory is a facility of the University of Chicago and is housed in an ornate Romanesque-style building located on a 77-acre park-like site near Lake Geneva, Wisconsin, about a two-hour drive northwest of downtown Chicago. It opened in 1897 and was closed to almost all activity in 2018.

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