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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.
Gratified that JH appreciates the astronomical legacy that she left at Slough. Explains that she returned to Hanover because she felt that 'it would be in vain to struggle any longer against age and infirmity.'
Discusses her will.
Wishes JH a happy birthday. Finished the catalogue of 2500 nebulae.
Completing the catalogue of 2500 nebulae. Impressed with a French biography of William Herschel, although CH notes a few occasions where 'too great a stress is laid on the assistance of others.'
Discussing William Herschel's financial difficulties, CH confides that 'she never felt satisfied with the support your father received toward his undertakings, and far less with the ungracious manner in which it was granted.' Regrets WH was not able to do more work with the 40-ft. reflecting telescope.
Relieved that JH has returned safely from his European tour.
Thrilled to be named godmother of JH's first child.
Writing her memoirs, CH sends for JH's perusal an account of her youth.
Saddened at the death of JH's mother; knows that 'it can't be long before I shall follow the dear departed.'
Studying the volcanoes of Auvergne; hopes to use his newly-created actinometer at the Puy de Dôme.
Received the first volume of Johann Pfaff's German translation of William Herschel's papers. Just completed a second catalog of double stars; review of nebulae going slowly. JH comments on his precise sweeps.
Hopes to send to CH a catalog of new double stars soon. JH is very disappointed with Johann Pfaff's German translation of William Herschel's papers.
Sending the Gold Medal awarded to CH by the Astronomical Society and also a pair of bracelets from his mother; will send the indexes later. Just erected James South's large equatorial.
JH played no role in the awarding of an Astronomical Society medal to CH. Sent to CH a few copies of JH's Light. His catalogs of double stars and nebulae are progressing well.
JH asks for a large oil portrait of CH, the size of his father's.
Reports on good health and behavior of JH's new daughter, Caroline Emilia Herschel. Comments on Greek music and on recent results of the R.S.L. Glass Committee.
Sends to CH his new book, Prelim. Discourse. Writes that he 'took little part in the proceedings about the Royal Society. Under any circumstances I would not have held the office of President more than a year and should have felt it a grievous evil to have held it at all.'
JH awarded the Guelphic Order of Knighthood by King William IV, an honor earlier bestowed on William Herschel.
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.
On his German travels, JH left Margaret Herschel and the children at Slough because he feared their exposure to the cholera epidemic.