An 18th-Century telescope, considered the "finest" example of its kind, has gone on display in Somerset. The Herschel Museum of Astronomy, in Bath, has acquired the Gregorian Reflector telescope ...

The completed Allen Telescope Array (ATA) is intended to consist of approximately ... The ATA antenna is a 6.1-meter (approximately 20 foot) offset Gregorian antenna, with a 2.4-meter (8 foot) ...