About the lunar model made by WW, and being considered for purchase [see JH's 1846-2-20].
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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.
About the lunar model made by WW, and being considered for purchase [see JH's 1846-2-20].
Encloses letter from W. S. Stratford at R.A.S. How RS plans to distribute works on J. J. L. Lalande and N. L. Lacaille left unfinished at death of Francis Baily.
Looking forward to learning JH's opinion of Richard Sheepshanks.
Professor [H. J.] Anderson of New York wishes to be introduced to JH. Number 600 of Astronomische Nachrichten will finish the 25th volume of the journal. Wilhelm Struve will be present.
Cannot explain how Thomas Henderson arrived at special figures in N. L. Lacaille's star catalog. Will examine Lacaille's volumes tomorrow.
Arranges a meeting the next morning with JH.
Discusses the printing of J. J. L. Lalande's Catalogue of Those Stars in the Histoire céleste française....
Replies to some of the queries from JH's 1847-5-6 letter.
Can offer no explanation of how Thomas Henderson computed tables from data in N. L. Lacaille's star charts. Henderson did all his work at home. Suggests explanations for Henderson's corrections in red ink.
Reports that the RAS has an available balance of £77. He calculates that to complete the printing of J. J. L. Lalande's Catalogue of Those Stars in the Histoire céleste française... and N. L. Lacaille's Catalogue of 9766 Stars in the Southern Hemisphere, however, will require £83 pounds; WS hopes to cut costs so that they do not overspend their grant.
Concerning Thomas Henderson's reductions of N. L. Lacaille's observations.
Sending to JH some information about 'L's catalogue' [either N. L. Lacaille's Catalogue of 9766 Stars in the Southern Hemisphere or J. J. L. Lalande's Catalogue of Those Stars in the Histoire céleste française....]
Although WS is suffering from gout, he promises to work on the layout of J. J. L. Lalande's Catalogue of Those Stars in the Histoire céleste française....
Congratulates JH on finding solution [to Thomas Henderson's notations]. Sends extract of 11 Mar. 1841 letter from Henderson, stating that Henderson used computations in Francis Baily's edition of N. L. Lacaille's catalog. RS's notes on observation and reductions of J. J. L. Lalande. Sent skeleton of RS's 'Preface' to W. S. Stratford.
Discusses the layout of J. J. L. Lalande's Catalogue of Those Stars in the Histoire céleste française....
About a time conflict involving the R.S.L. and Visitation Day at the Royal Observatory.
Asks JH for measures of several double stars.
A note enclosed with the printed observations made with the Northumberland equatorial telescope.
Has directed the printers, Taylors, to send JH's booksellers the parts of the Barometrographia as issued, free of all costs. The science of meteorology attracts little attention at the moment.
Believes that RS's suggested correction, 'when translated into its equivalent value in terms of the inclination,' will provide sought-for values.