Asks JH's advice on the purchase of the lunar model. Anxious to see JH's new method of calculating double star orbits.
Showing 21–40 of 78 items
Asks JH's advice on the purchase of the lunar model. Anxious to see JH's new method of calculating double star orbits.
C. P. Smyth receives appointment as Astronomer Royal of Scotland. Again thanks JH for recommendation.
Sends angular results from various astronomers using similar epoches.
Sends copy of James Graham's letter concerning transfer of Paramatta Observatory to government authority. Thanks JH for advice on the matter. Discusses methods of magnitude estimation.
Will miss R.A.S. meeting; asks WS to take chair. William Lassell announces discovery of Hyperion; believes he may have also observed an eighth satellite of Saturn.
Thomas Henderson discovered a comet on 2 December. Thanks JH for diagram of JH's comet-sweeping telescope.
Devises and suggests mode of micrometric measurement of angles.
Pleased with JH's Gamma Virginis results. Mr. Visconti made head of Military Geographical Institute at Naples.
Reaches conclusion about Gamma Virginis. States in regard to shape of orbit, 'We are all wrong.' Believes the orbit is less than 150 years. Claims that many errors exist in British measurements made between 1829 and 1834.
Sends calculations of Gamma Virginis and determines its eccentricity. Believes the orbit is highly elongated, like that of a comet.
Doubtful over WS's angle for Gamma Virginis; urges precision in measurement. Hopes to obtain moon map from R.A.S. during next visit to London. Unable to solve Aristarchus puzzle.
Francis Beaufort to publish comet information; also wants JH's opinion as to what data should be sent to Cape Observatory. James South will lecture at Royal Institution. South's requests for several historical astronomical instruments refused.
Requests copy of JH's observations made in 1811. Asks latest opinion of JH on Gamma Virginis before the publication of his Cycle of Celestial Objects for the Use of Naval, Military, and Private Astronomers.
Sends JH's 1817 observations; cannot locate any he made in 1811. Tells WS Gamma Virginis measurements will take more time.
Agrees with JH opinions of Gamma Virginis orbit. Sends JH a drawing by C. P. Smyth of Halley's Comet.
J. R. Hind determined orbit of Mu2 Boötes using JH method.
Sends paper by F. W. A. Argelander, which G. B. Airy wishes to have published. Revising chapter on perturbations in his Treatise Astr. Will include theory of motions of the apsides and the variations of the eccentricities.
Discusses the purchase price of Mme. Witte's lunar model.
Sends Gamma Virginis data. Will report Aurora Borealis observations to R.A.S.
Disappointed with format of Nautical Almanac. Arguments over this have caused many hard feeling among R.S.L. members. Details the controversy.