Zenith sector telescopes

Zenith sector telescopes

R102/0201 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 56.3MB

Downloadable file size: 1.2MB

Price image Pricing

Please login to use the price calculator


Caption: Zenith sector telescopes. Diagram of three zenith sectors, which are telescopes used to make accurate observations of the position of an object in the sky, such as a star or the Sun. The telescope is pivoted on a scale and can move in either direction (following the meridian). This allows the position of an object to be measured relative to the zenith (which is directly overhead). These zenith sectors were made by leading instrument makers in the early 19th century: (from left to right) Jesse Ramsden, George Graham and Edward Troughton.

Release details: Model release not required. Property release not required.

Keywords: 1800s, 1828, 19th century, 3, artwork, astronomical, astronomy, black-and-white, diagram, edward troughton, equipment, george graham, graham, historical, history, history of, history of science, illustration, instrument, instruments, jesse ramsden, meridian, monochrome, pivot, pivoted, position, ramsden, technological, technology, telescope, telescopes, three, trio, troughton, zenith sector, zenith sectors

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.