Goodricke-Pigott Observatory is a private astronomical observatory in Tucson, Arizona, dedicated on October 26, 1996, and put into operation that evening with images of Comet Hale–Bopp. Named for late 18th-century astronomers John Goodricke and Edward Pigott of York, England, it began with a Celestron C14 Schmidt-Cassegrain telescope featuring a 0.35-meter aperture and f/11 focal ratio. That instrument was later improved with new optics, a new clock drive, and an ST-4 star tracker to correct periodic motion error. The site also includes MOTESS, the Moving Object and Transient Event Search System, reflecting the observatory’s focus on systematic sky watching and imaging rather than public display.