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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.
Adds clock to telescope, enhancing distance measuring power. Search for Halley's Comet begins. Reports double star data; observes nebulae in JH's Catalogue of Nebulae. R.A.S. location moved to Somerset House. Quarrel between James South and Richard Sheepshanks being arbitrated.
Describes factors that led to C. P. Smyth's appointment to Cape. Uses rock crystal prism for double star observations. Continues observing JH's nebulae with equatorial clock. Approves of proposal for worldwide meteorological observations; will distribute brochures.
Details sighting of Halley's Comet; sends chart of dates, times, right ascension, and declination. Receives letter from Niccolo Cacciatore, which 'gives hopes of a new planet.'