Sending a description of the observatory he has erected, containing an equatorially mounted Newtonian reflector. Has high opinion of its efficiency. Has detected a sixth star near the trapezium of Orionis.
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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.
Sending a description of the observatory he has erected, containing an equatorially mounted Newtonian reflector. Has high opinion of its efficiency. Has detected a sixth star near the trapezium of Orionis.
Sending a letter he has received from a friend regarding a curious observation of the moon. Has seen the comet and encloses diagrams of its position.
Has seen the seventh satellite of Saturn. Encloses diagrams and comments on them.
Was in error when in his last letter he stated he had seen the seventh satellite of Saturn; he has yet to see it.
Details of WL's observations of the seventh satellite of Saturn.
Details of WL's observations of a ring and satellite of U. J. J. Leverrier's planet.
About observations of the seventh satellite of Saturn, and using William Parsons' (3rd Earl of Rosse) 'machine'.
Note to accompany details of WL's observations of the satellite of Neptune. [Details are found in WL's letter to H. C. Schumacher of 1847-8-6.]
Grateful for JH's Cape observations. Has nothing new to report on the ring of Neptune. Has been troubled with dew on his prism, but has now succeeded in overcoming this difficulty.
Has sent his observations on Saturn and Neptune to the R.A.S. and encloses a copy for JH. Weather has been unsuitable for many observations recently. Has not heard of any observations of a second satellite of Neptune.
Has received a letter from W. C. Bond of the Cambridge Observatory (U.S.A.), who speaks of the satellite of Neptune. Bond also sends details of the stars around Orion. Relates his own work on the specula of telescopes. Intends to submit a paper on this to the R.A.S.
Outlining the apparent controversy between himself and W. C. Bond over the discovery of the satellites.
Further regarding W. C. Bond's discovery of the Neptunian satellites.