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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.
Describes testing William Simms's object glass and then gives details of the equatorial mounting GA used; offers to send carpenter to JH to construct mounting so JH can test object glass [diagram].
Is anxious to know whether JH has used William Simms's object glass, and seeks JH's opinion.
Provides JH with the latest Royal Observatory values for Gamma Virginis [see JH's 1845-9-30], and advises JH to change his method of measuring double stars.
Still trying to solve the problem of jogging Robert Peel's memory [see JH's 1845-10-8].
Thanks JH for his report on William Simms's object glass trials [see GA's 1845-9-29], together with some other astronomical matters, including reference to a letter from F. W. Bessel.
A note to accompany the return of a letter to JH.
Has received a satisfactory response from the Admiralty [see JH's 1845-9-30].
Asks JH to write to George Merz for an object glass for a telescope for the Cape Observatory.
Is writing about further arrangements about the telescope to go to the Cape Observatory; JH is negotiating with George Merz for it [see GA's 1845-10-28].
Suggests to GA that his observations [see GA's 1847-11-1] might rather support than destroy the theory of the thermo-electric origin of terrestrial magnetism.
Has requested Admiralty funding for the proposed telescope [see GA's 1845-11-2]; GA does not like the mounting the telescope is to be given; has gathered, from Otto Struve, that it does not work well at Pulkowa Observatory.
Is returning JH's report on William Simms's object glass [see GA's 1845-10-14]; GA reiterates Otto Struve's statement about the mounting at Pulkowa Observatory [see GA's 1845-12-1].
The Admiralty has approved the purchase of the telescope for the Cape Observatory [see GA's 1845-12-1].
A note of instructions about paying for the Cape telescope [see GA's 1845-12-20].
Informs JH that GA has stated that he will no longer work with James South on the Board of Visitors of the Royal Observatory; wants JH to be prepared for possible trouble.
Essentially agrees with JH's plan for distribution of the star catalogues [see JH's 1846-11-18].
A notice of meeting of the Standards Commission.
Offers his suggestions for any trimming of the catalogue distribution list that may be necessary [see JH's 1847-11-17].
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.]