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The Sir John Herschel Collection
The preparation of the print Calendar of the Correspondence of Sir John Herschel (Michael J. Crowe ed., David R. Dyck and James J. Kevin assoc. eds, Cambridge, England: Cambridge Univ. Press, 1998, viii + 828 pp) which was funded by the National Science Foundation, took ten years. It was accomplished by a team of seventeen professors, visiting scholars, graduate students, advanced undergraduates, and staff working at the University of Notre Dame.
The first online version of Calendar was created in 2009 by Dr Marvin Bolt and Steven Lucy, working at the Webster Institute of the Adler Planetarium, and it is that data that has now been reformatted for incorporation into Ɛpsilon.
Further information about Herschel, his correspondence, and the editorial method is available online here: http://historydb.adlerplanetarium.org/herschel/?p=intro
No texts of Herschel’s letters are currently available through Ɛpsilon.
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].
Has received GA's manuscript instructions for ship's officers [see GA's 1848-1-9]; there is no hurry on the remaining pages.
Thanks GA for his contributions to some material JH is compiling; asks about date of Board of Visitors meeting.
Proposes changes in the buildings at the Royal Observatory to accommodate the shifting of one of the telescopes [see GA's 1848-1-6].
Comments on all of GA's instructions for ship's officers [see JH's 1848-1-10], mostly suggesting some additions about meteor showers.
Thinks the building changes proposed [see GA's 1848-1-21] are fine; explains JH's position on the whole matter.
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.
JH comments on quality of Georg Merz object glasses.
Agrees that some of JH's suggestions about meteor showers were probably unnecessary [see GA's 1848-1-29].
Is aware of T. J. Hussey's drawings [see GA's 1848-2-1]; needs information about P. A. Hansen's lunar theory for an appreciation JH is to provide.
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.]
Surprised by GA's unhappiness with George Merz [see GA's 1848-2-17]; suggests GA seek information from Thomas Maclear at the Cape, who is getting a new telescope from George Merz.
Georg Merz's practice regarding the sale of object-glasses. Is preparing a model of a transit circle.