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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.
Sends observations made with the nine-foot equatorial, with comments. Received JH's Astronomy and the Logs. of Charles Babbage; the latter aroused protests in the family. [Archibald] Robertson sold five copies of the Astronomy instantly and has ordered further copies.
Has had some splendid evenings, and sends the observations made. Comments on the work of the new equatorial. W. R. Dawes would like to compare the measures of Antares with the enclosed. Admiral Reynolds is being succeeded by Commodore Christopher Wyvill, a queer person. Sends Cape newspapers to show events in the convict question. All public servants are to be deprived of food, etc.
Attempts to determine light curve of Eta Argus; describes methods for determining magnitude. C. P. Smyth uses R.A.S. theodolite telescope. TM will triangulate Bushman Flat. Parallax work at Cape Observatory continues. Reports progress of new government Secretary, [John] Montague.
Sends observations of Lambda Toucani and Zeta Eridani.
Recent travels. Dangers and difficulties of triangulation survey. Observations of variable brightness of Eta Argus. [Letter continues 29 December] Returned from 'Pequet Brig,' leaving C. P. Smyth with theodolite. Events in colony. Sending observations of Encke's Comet for R.A.S. Observations of 'great comet of March.' News of Nathaniel Wallich and family. Sends 'plan of the Herschel obelisk drawn by Smyth.' Details of obelisk. Progress on observations of 'Parallax stars.' Organized system to prevent mistakes in calculating and copying meridian work.
Magnitude changes in Eta Argus. Compares methods for measuring brightness. Difficulties completing 'sector observations.' C. P. Smyth's problems with theodolite at Cape Agulhas. Mrs. [Mary] Maclear recovering after serious illness. New roads and bridges in colony.