Associations to the word «Coelostat»

Wiktionary

COELOSTAT, noun. (astronomy) A device that rotates a telescope so as to keep its orientation constant with relation to the stars.

Dictionary definition

COELOSTAT, noun. Optical device used to follow the path of a celestial body and reflect its light into a telescope; has a movable and a fixed mirror.

Wise words

The short words are best, and the old words are the best of all.
Winston Churchill