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This page shows a list of all images tagged with "Great Refractor Chair".
1848/11/8 Adjustable Chair for Great Refractor
Earliest source: William Cranch Bond. "Description of the Observatory at Cambridge." Memoirs of the American Academy of Arts and Sciences vol. 4. Metcalf and Company, 1849.academybond
The observing chair for the Great Refractor. This chair was on wheels that set on a pair of circular tracks surrounding the refractor. The observer could use a rope and pully system to move the chair around the track. A crank in front of him was used to raise and lower the position of the seat.
This article, as well as Annals volume 1, includes additional drawings of the mechanical components of the chair that have not been included in this image database at this time.
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