Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
Yerkes is the name of an astronomical observatory located in Williams Bay, Wisconsin, known for housing one of the largest refracting telescopes ever built. It has played a significant role in astronomical research since its establishment in 1897.
5 Must Know Facts For Your Next Test
The Yerkes Observatory houses a 40-inch refractor telescope, which was the largest in the world at the time of its completion.
It was established by astronomer George Ellery Hale and funded by Charles T. Yerkes.
Yerkes Observatory contributed significantly to stellar spectroscopy and photometry research.
The observatory is noted for its pioneering work in astrophysics and providing valuable data on starlight analysis.
Although it ceased regular operations in 2018, it remains an important historical site for astronomical research.