Will see JH on Friday; hoping for clear weather.
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Will see JH on Friday; hoping for clear weather.
Sends three chronometers set to Blackman St. time. Confirm them by a transit of Arcturus tomorrow, then return them to JS at Blackman St. Gives times for next rocket firings.
Coordinates plans for firing rockets at Blackman St. and Slough. Problems with chronometer errors. [JH annotation: Longitudes of Slough, Greenwich, and Blackman St. Will fire rockets next on 10 July.]
Discusses a paper JS is preparing for the Astronomical Society. Mentions his recent observations. Suspects the report of a comet is a hoax.
Regrets having missed JH. Has observed the seven satellites of Saturn and the fifth star of the Trapezium. Wishes to observe some of the objects observed by Wilhelm Struve.
Gives directions for some time measurements involving rockets JS was planning in conjunction with JH. Mentions various double stars.
Discusses JS's efforts to reform the Nautical Almanac, including JS's Practical Observations on the Nautical Almanac. States that in this 'awful crisis' JS has no hostile feelings toward its superintendent, Thomas Young.
Has been ill. Should we publish our observations of 340 double stars or extend the number to 400?
Discusses various apparent errors JS has been detecting in observing double stars with two different telescopes. Assures JH that no serious problems exist.
Reports on various observations of double stars that JS has made. Asks JH to check some of JS's results.
Reports on efforts to make measurements regarding 39 Boötes. Accepts JH's invitation for JS and wife to visit JH at Slough.
Discusses observations he had made of various stars, especially a star in Capricorn that William Herschel believed to be a gravitational double. Has observed 61 Cygni.
Discusses a paper by [Edward] Troughton and work that JH and JS were preparing. Remarks on observations of 61 Cygni and of Sigma Cassiopeia.
Will bring a transit instrument to Slough so that JH and JS can determine its longitude. Proposes joint observations of the satellites of Saturn. Has been observing 61 Cygni.
Writing in confidence, informs JH of a conversation with Humphry Davy concerning the appointment of assistants for John Pond, Astronomer Royal. Situation complicated by Pond's precarious health and the widespread belief that JH would be the appropriate successor to Pond.
Writing to JH [then travelling in Europe], JS informs him that JS is moving to Paris. Comments on his plans for his observatory in Paris and on recent events in England regarding astronomers and instruments.
Feels he has pledged to the public to continue double star observation. Encourages JH to persevere as well. Offers JH use of his 5-foot refracting telescope. Asks about Fraunhofer telescopes.
Reports on his life in France and on details in the paper JS and JH were publishing on double stars.
Reports on some observations from JS's observatory near Paris and on his contacts with the Paris Observatory. Relays to JH a request from Alexander von Humboldt for barometric observations. Invites JH to visit.
On the eloges of William Herschel being prepared by François Arago and J. B. Fourier. JH's and JS's work on double stars much appreciated among French astronomers. On Alexis Bouvard, Arago, and other French astronomers. On Wilhelm Struve's observations of double stars.