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The Yerkes Observatory glass tree is (probably) the tallest in the world The first Yerkes Observatory glass tree event took place in 2022. By that point, Mack had done his research on tall trees ...
Yerkes Observatory (/ ˈ j ɜːr k iː z / ⓘ YUR-keez) is an astronomical observatory located in Williams Bay, Wisconsin, United States. The observatory was operated by the University of Chicago Department of Astronomy and Astrophysics [ 2 ] [ 3 ] from its founding in 1897 until 2018.
Yerkes 41-inch reflector is a 40-inch aperture (101.6 cm) reflecting telescope at the Yerkes Observatory, that was completed in 1968. It is known as the 41 inch to avoid confusion with a 40 inch refractor at the observatory. Optically it is a Ritchey–Chrétien design, and the main mirror uses low
The Swedish 1-m Solar Telescope, with a lens diameter of 43 inches, is technically the largest, with 39 inches clear for the aperture.The second largest refracting telescope in the world is the Yerkes Observatory 40 inch (102 cm) refractor, used for astronomical and scientific observation for over a century.
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The Yerkes telescope is a 40 inch magnifying glass and since the time that these giant refracting scopes were made they started to use curved mirrored surfaces which need less length (which is possibly the real reason that this is the largest refracting telescope ever made). So, the eight inch refracting telescope I used was 12 feet long, but ...