oroheliograph
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English[edit]
Etymology[edit]
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.