Naval Observatory Archives

Saturn, imaged Sept. 21, 2023, 01:14 UT at the U.S. Naval Observatory, Washington, DC with the historic 30.5-cm (12-inch) f/15 Clark/Seagmüller refractor and a ZWO ASI183MC CMOS color imager. Note: This image did not come via the Great Equatorial telescope. (USNO image)

Naval Observatory gives rare look through the lens of its ‘prolific’ 150-year-old telescope

DefenseScoop got a firsthand look at the “Great Equatorial," which still supplies the Navy and other Defense Department components with crucial astronomical data.

Nov 15, 2023 By Brandi Vincent