Clyde Tombaugh using his blink comparator

Clyde Tombaugh using his blink comparator

H420/0131 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 27.5MB

Downloadable file size: 1.9MB

Price image Pricing

Please login to use the price calculator

This image is part of the feature B B C



Caption: Clyde Tombaugh. View of Clyde Tombaugh (1906-1997) with the blink comparator he used to discover Pluto. Tombaugh couldn't afford to study at college, but built his own telescope, and became an assistant at Lowell Observatory. Lowell himself predicted the existence of a ninth planet, and a team was set up to find it. Tombaugh invented the blink comparator to facilitate the search. This device allowed comparison of two photographs of the sky, which showed if any object had altered position. After 7000 hours of work, he found a tiny object outside the orbit of Neptune, which was named Pluto. In the course of his searches, he also discovered some 3000 asteroids.

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

Keywords: astronomer, clyde, clyde tombaugh, discoverer, pluto, portraits, surname t, tombaugh

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