#Biggest telescope for sale free#

Griffith was invited to visit to Mount Wilson Observatory, then home to the world’s largest operating telescope, the 60-inch reflector. The genesis of Griffith Observatory’s public telescope occurred when Griffith J. Such a system is said to be “stress compensated.” The unique design of construction by Zeiss also counteracts the bending of the telescope due to gravity with counterweighted levers in the telescope’s tube and mounting. Counterweights precisely balance the telescope so that the Telescope Demonstrator can easily move the instrument by hand in spite of its 9,000-pound weight. The telescope sits on a tilted mounting (an equatorial mount) aligned with the Earth’s axis, and it is slowly turned by a motor to compensate for the Earth’s rotation so that objects remain centered in view for as long as is desired. The main telescope tube carries a smaller 9-inch refracting telescope piggyback, which permits two different views of a single object, as appropriate. One of the Observatory’s experienced telescope demonstrators guides the public in looking through the eyepiece of the 12-inch Zeiss refractor (so-called because its light is collected and focused by a 12-inch diameter glass lens at the front of the 16-foot-long telescope tube). When the night sky is clear, the Zeiss telescope is open from the roof and serves up to 600 visitors per night. Most nights, other telescopes also are available on either the roof or front lawn to allow those in wheelchairs to observe directly. The station provides live video and audio feeds from the telescope and allows visitors unable to climb the stairs into the telescope dome to have an observing experience. The most significant change is the addition of a new exhibit station located in the Hall of the Eye exhibit hall below the telescope dome. The copper roof of the telescope dome was repaired and restored, and the dome’s drive mechanisms were replaced. The telescope itself is in excellent condition and was unchanged by the renovation and expansion project. A popular public destination when special celestial events occur, more people viewed Halley’s Comet and comets Hale-Bopp and Hyakutake through the Observatory’s Zeiss telescope than any other telescope on the planet. Located in the roof-top dome on the building’s east end, the Zeiss telescope is intended mainly for nighttime viewing by the general public, commonly targeting the Moon, planets, and brightest showpiece objects of our galaxy. More people have looked through it than any other telescope in the world. Since opening in 1935, more than seven million people have put an eye to Griffith Observatory’s original 12-inch Zeiss refracting telescope.

#Biggest telescope for sale free#

This telescope is free to the public every night the Observatory is open and the sky is clear. Mounted in the copper-clad dome on the east end of the building is the Zeiss telescope array.

Griffith wanted the public to have the opportunity to look through a telescope, which he felt might broaden human perspective. One of the principal reasons is the presence and regular availability of high-quality public telescopes. Griffith Observatory is one of the premier public observatories in the world.