Responds to some of JH's concerns [see JH's 1847-12-30] about changes in instrumentation at the Royal Observatory.
Showing 1–20 of 43 items
Responds to some of JH's concerns [see JH's 1847-12-30] about changes in instrumentation at the Royal Observatory.
A note accompanying a printed circular about the proposed changes in instrumentation at the Royal Observatory. [Encloses GA's circular to Board of Visitors.]
A note accompanying some manuscript pages of instructions for ship's officers [see JH's 1847-12-23].
Proposes changes in the buildings at the Royal Observatory to accommodate the shifting of one of the telescopes [see GA's 1848-1-6].
Responds to a number of JH's concerns about buildings, instruments and printing at the Royal Observatory [see JH's 1848-1-22 & 1847-12-30].
Responds to suggestions by JH [see JH's 1848-1-22]; is worried about giving too much information.
Further regarding the distribution of the J. J. F. Lalande catalogue.
Regarding spots on the sun and [T. J.?] Hussey and [A.?] Dawson's observations.
Concerning P. A. Hansen's observations of Lunar irregularities.
Regarding the proposed eight-inch object glass. Supplementary estimate for the Admiralty. Extract of a letter from Otto Struve.
Regarding modifications for the actinometer. Has written to Georg Merz regarding the object-glass. Regarding the eight-inch object-glass. Name of the maker of his actinometer. [JH has written a rough draft of his reply to this letter on the same sheet.]
Georg Merz's practice regarding the sale of object-glasses. Is preparing a model of a transit circle.
Concerning object-glasses.
Concerning the new meridional instrument. Is JH coming to town soon?
No summary available.
Regarding the reinstatement of the zenith tube.
Further information on the zenith tube. Description of a zenith tube.
No summary available.
No summary available.
Received proof pages of Admiralty Manual [see JH's 1848-2-2], and wants to add a paragraph on the zodiacal light [which GA attaches].