Yerkes Observatory of the University of Chicago, Williams Bay, Wisconsin, 40-inch diameter objective lens.
The largest refracting telescope in Wisconsin is located at the Yerkes Observatory in Williams Bay. Built in the 1890s, the Yerkes Observatory's 40-inch refracting telescope is one of the largest of its kind and was once the largest in the world.
Refracting telescope
The Yerkes Observatory's 40-inch aperture refracting telescope weighs approximately 8,010 pounds.
The refracting telescope was invented around 1608 by Dutch eyeglass maker Hans Lippershey.
The astronomer used a powerful refracting telescope to observe a distant galaxy.
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Williams Bay, Wisconsin has the 40-inch refractor at the Yerkes Observatory there.
A reflecting telescope uses mirrors while refracting telescopes uses lens. The refracting telescope also had chromatic aberration and bad resolution while the reflecting telescope had none of these.
A radio telescope detects light in the form of radio waves and a refracting telescope detects light in the visible wavelengths
Refracting telescope
The largest practical functioning refracting telescope is the Yerkes Observatory 40 inch (102 cm) refractor.
A refracting telescope is a type of telescope that has a large thin lense at the front and a smaller thicker lense at the end where the eyepiece is. Refracting telescopes use lenses unlike reflecting telescopes that use mirrors to reflect the light. This is a good image of a refracting and reflecting telescope: [See related link]
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A refracting telescope is a type of optical telescope. It was used in astronomical telescopes and spy glasses. Objective lens are used to produce the image.
The Yerkes Observatory's 40-inch aperture refracting telescope weighs approximately 8,010 pounds.
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The refracting telescope was invented around 1608 by Dutch eyeglass maker Hans Lippershey.