photoheliograph

American  

[foh-tuh-hee-lee-uh-graf, -grahf] / ˌfoʊ təˈhi li əˌgræf, -ˌgrɑf /

noun

Astronomy.

1. an instrument for photographing the sun, consisting of a camera and a specially adapted telescope.

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Other Word Forms

• photoheliographic adjective
• photoheliography noun

Etymology

Origin of photoheliograph

First recorded in 1860–65; photo- + heliograph

Example Sentences

With the telescope, micrometer, heliostat, and spectroscope came desire for more complex instruments, resulting in the invention of the photoheliograph, invoking the aid of photography to make permanent the results of these exciting researches.

From Scientific American Supplement, No. 288, July 9, 1881 by Various

It was one of the heaviest of the lot, containing the cast-iron pier on which the photoheliograph was to be mounted.

From The Reminiscences of an Astronomer by Newcomb, Simon