25th was made my proposal for an altazimuth Instrument for making observations of the Moon's place more frequently and through parts of her orbit where she could never be observed with meridional instruments; the most important addition to the Observatory since its foundation.
"Autobiography of Sir George Biddell Airy"
George Biddell Airy
The building to receive the altazimuth Instrument was erected in the course of the year; during the construction a foreman fell into the foundation pit and broke his leg, of which accident he died.
"Autobiography of Sir George Biddell Airy"
George Biddell Airy
1857 In the Report to the Visitors, when on the subject of the altazimuth, the following paragraph occurs: 'I alluded in a preceding section to the cutting away of a very small portion of one of the rays of the three-armed pier which carries the altazimuth.
"Autobiography of Sir George Biddell Airy"
George Biddell Airy