Te­le­scope facts

Northwest Arkansas Democrat-Gazette - - NORTHWEST ARKANSAS -

■ The te­le­scope was built in 1911 by the John A. Bras­hear Com­pany in Pitts­burgh.

■ The te­le­scope saw first light at the Sproul Ob­ser­va­tory at Swarth­more Col­lege.

■ The lenses are held in place by a brass ring.

■ The te­le­scope has as 24inch di­am­e­ter.

■ The re­frac­tor has been heav­ily used in astro­nom­i­cal pho­tog­ra­phy: 100,000 by 1974.

Newspapers in English

Newspapers from USA

© PressReader. All rights reserved.