Has difficulty observing sun spots. Thomas Maclear sends WS information for next year's occultation of Alpha Tauri. Completes rotating roof for personal observatory.
Showing 41–48 of 48 items
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 difficulty observing sun spots. Thomas Maclear sends WS information for next year's occultation of Alpha Tauri. Completes rotating roof for personal observatory.
C. P. Smyth arrived at Cape on 10 October; Thomas Maclear seems pleased with his work. Asks WS to continue observing Gamma Virginis; JH has observed it only as a single star in recent attempts. Thanks WS for distributing meteorological brochures. George Eden visits and will send meteorological observations from India.
Presents JH with R.A.S. medal for Catalogue of Nebulae.
Plans study of Joseph Bianchi's New Sidereal Catalogue. Sends Bianchi excerpt describing double star of Gamma Virginis.
Sends early nineteenth-century astronomical observations. Francis Baily receives £500 from Parliament to enlarge stellar catalogue. Otto Struve's observations of Gamma Virginis agree with JH's.
Sends Gamma Virginis observations. Devotes time to nautical astronomy; experiments with formulae for calculating occultations. Takes interest in eclipse of Jovian satellites.
Sends observations of Gamma Virginis, which differ from those of WS and James South. Observed transit of Mercury. Has abandoned plans of going to Cape of Good Hope this year. Plans to visit Caroline Herschel in Hanover.
Details sighting of Halley's Comet; sends chart of dates, times, right ascension, and declination. Receives letter from Niccolo Cacciatore, which 'gives hopes of a new planet.'