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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.
Is obliged for JH's letter acknowledging the receipt of the Radcliffe Catalogue; regrets the delay and will inquire into the cause. Has purchased R. C. Carrington's transit circle for the Radcliffe and would welcome JH's advice as to its employment.
Is pleased that the Government have put Sir Thomas Maclear on the Civil list. Has read JH's paper on atoms with much interest and amusement. Hopes that JH will call at the Observatory when in Oxford. Finds the R. C. Carrington transit circle a valuable instrument. Comments on his observations.
Comments on double star observations and some papers on the subject.
About the location of several different sets of double star observations.
Comments on the quality of some of the double star observations in print.
Notes strengths and weakness of heliometer for observing double stars. Calls it 'laborious, troublesome instrument.'
Offers to send on to JH any notices of double star observations that he receives.