Recommends buying optics for 7.5-inch telescope from Metz and Mahlers in Munich and having those mounted in London.
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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.
Recommends buying optics for 7.5-inch telescope from Metz and Mahlers in Munich and having those mounted in London.
Both JH and his wife, Margaret, are very concerned about the health of Madame Gerlach, the aunt of NS. Details are provided.
Urges doubling number of lunar observations.
Construction of JH's new instrument for photographing spectral lines is still incomplete, and A. E. Becquerel has already announced discovery. JH will return £100 granted to JH by R.S.L.
Relinquishes R.S.L. Donation Fund for spectrometer [see JH's 1842-6-1], because [A. C.] Becquerel's research makes it obsolete.
Would support improvements, both in number and quality, of lunar observations at the Royal Observatory; current practices produce unacceptably large predictive errors.
Has to come to town for a Trustee meeting of the British Museum and wonders whether it would be convenient for him to visit Tavistock Place to consult him on various matters.
Sends Howard Elphinstone's barometer observations [at Ore, near Hastings].