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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.
Thanks JH for sending a copy of his Prelim. Discourse; notes that it has been translated into German from a French translation. Laments that she is 'decaying.'
Has determined the periods of four double stars. JH considers the determination of the elliptical orbits of double stars as 'one of the greatest [discoveries] ever made.'
Regrets that William Herschel could not see JH finish WH's catalogue of double stars; thrilled that JH has revived WH's name.
Observations on [double] stars. Congratulations [on birth of Isabella Herschel].
JH awarded the Guelphic Order of Knighthood by King William IV, an honor earlier bestowed on William Herschel.
Received news from the Duke of Cambridge of JH's appointment to the Royal Hanoverian Guelphic Order.
Losing her strength and eyesight. Describes a conversation with the Duke and Duchess of Cambridge.
Saddened at the death of JH's mother; knows that 'it can't be long before I shall follow the dear departed.'
Wilhelm Struve's observations support JH's findings concerning the rapid revolution of Eta Coronae. In acknowledgement of the discovery that double stars are a 'revolving binary system,' JH changed the inscription on William Herschel's monument.
Reminds JH to send his catalog of double stars.
On his German travels, JH left Margaret Herschel and the children at Slough because he feared their exposure to the cholera epidemic.
JH and Margaret Herschel visited the Isle of Wight.
JH reports the birth of his son William James Herschel.
JH preparing for his journey to Cape Town. Compiling a catalog of nebulae and clusters. Sending to CH a comparison of a new set of elements of Gamma Virginis and a set of observations of it from 1720-1833; JH asks CH to send a copy to Carl Gauss.
Feeling simply 'dismal.'
JH explains how CH's money will be allotted to her while JH is in Cape Town. Margaret Herschel writes CH a note describing JH's new son William.
Formal note and stamp acknowledging receipt of £50 annuity from estate of William Herschel, sent by executor JH, followed by note to JH on arrangements for sending such payments. Asks for news about Stewart family.
Sent to CH JH's fifth catalog of double stars. JH will send to CH his new nebulae observations very soon.
Wishes JH well on his upcoming trip to the Cape of Good Hope. Asks JH to study the lower part of the Scorpion, for William Herschel was mystified by the 'uncommon appearance of that part of the heavens.' [Written as a postscript to a letter by Margaret Herschel.]
Mentions to CH that 2000 of the nebulae and all of the engravings are printed.