The history of the Stull Observatory goes back to 1863, when the astronomer William A. Rogers ordered and donated a 9 inch refractor with the American optician Henry Fitz.
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It is tied with the Austin-Fellows telescope of the Stull Observatory at Alfred University for being the 2nd-largest optical telescope in the state of New York, the largest being the 40-inch reflector at SUNY Oneonta College Observatory.