Provides prices and delivery times for a variety of different sizes of refracting telescopes, as well as some mounting advice.
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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.
Provides prices and delivery times for a variety of different sizes of refracting telescopes, as well as some mounting advice.
Provides more specific prices and information for the refractor that GM believes will meet the specified needs [see GM's 1843-9-20].
Asks for some specifics of the mounting and proceeds to explain how the mountings will work [see JH's 1845-11-25].
Reports on progress of refractor [see GM's 1846-1-13], and deals with finances.