Has been informed that William Parson's telescope resolves all the nebulae in JH's catalogue into stars.
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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.
Has been informed that William Parson's telescope resolves all the nebulae in JH's catalogue into stars.
Regarding magnetic establishments and observations.
Comments on JH's observing a 'falling star.'
Wants to know if GA's opinions [see GA's 1845-4-1] are available for public information, or only for JH.
Last letter to JH was private [see GA's 1845-4-1].
Wants information on dispersion/separation of light in plate or crown glass.
Provides the best values available for dispersion and separation, which will allow GA to calculate what he needs [see GA's 1845-4-4].
Gives detailed, official, replies to the questions in the magnetic committee circular [see JH's 1844-12-5].
Asking him to read GA's medal-speech.
Discourages the continuation of the magnetical and meteorological observations organized by the British.
Illegible.
Seeks GA's assistance in solving a puzzle in the mathematics of rotating bodies.
Comments on the various responses to the circulated questions about magnetic observations [see JH's 1844-12-5].
Is enclosing two transcripts of letters from William Simms relating to the object-glass. a. Hopes to give account next week. b. One glass good, other has failed.
Regarding the acceleration of retention of a shrinking sphere.
Mostly about the health of JH and his wife, Margaret.
Passes on information received from Thomas Maclear regarding stars. Has tried to use William Simm's object-glass.
Giving the plan of the Observatory.
Seems clear that JH's 'falling star' [see JH's 1845-4-29] was the same one reported by a correspondent of GA's as having been seen in Nottingham; in a postscript JH is not so sure.
Describes testing William Simms's object glass and then gives details of the equatorial mounting GA used; offers to send carpenter to JH to construct mounting so JH can test object glass [diagram].