oroheliograph
English
[edit]Etymology
[edit]From oro- + heliograph, from Ancient Greek word for "mountain".
Noun
[edit]oroheliograph (plural oroheliographs)
- (photography) A camera for obtaining a circular panoramic view of the horizon. The photographic plate is placed horizontally with a vertical lens above. A specially-shaped mirror reflects light from the entire horizon to the lens, by means of which it is focused upon the plate.