the willard l. eccles observatory (weo) is an astronomical observatory located on frisco peak in the san francisco mountains of utah (usa), about northwest of milford, utah. the observatory is owned and operated by the university of utah, and opened in 2010. the observatory features a ritchey-chretien telescope built by dfm engineering on an equatorial mount. the construction of the observatory was funded by donations from the willard l. eccles foundation and the e.r. & e.w. dumke foundation.