Sends photograph of a medal lately struck in Paris to commemorate the discovery of 100 asteroids, on which Hind appears.
Showing 81–93 of 93 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.
Sends photograph of a medal lately struck in Paris to commemorate the discovery of 100 asteroids, on which Hind appears.
His last note on the Julian period puzzled him. Has not taken many double star measurements, but will send on a few later. Has not finished the ecliptical charts yet. Regarding a planet more distant than Neptune.
Has calculated the ecliptic of Thucydides. Comments on this and the reading given by E. W. Hartwig. Regarding the 7 eclipses of the sun during the past 30 years. G. Bishop's assistant (W. Plummer) is investigating the orbit of the great comet of 1861. Nautical Almanac for 1874 delayed due to extra work on the transit of Venus.
Forgot to call his attention to the column regarding the Julian period in the Nautical Almanac. Something strange about the neighborhood of R. Leporis. He has no doubt seen the table of Julian dates in the Connaissance des temps.
Sends calculation of the Transits of Venus in 2004 and 2012. Cannot find any record of new double stars. Is in doubt about R. Leporis. Quotes an historical incident regarding an eclipse of the sun and the removal of Mahomet's pulpit. Did F. X. von Zach make his calculations himself?
Gratitude for Cape Results. Special comments on JH's 'method of sequences' and cometary theory. Refers to article on Halley's Comet in Astronomische Nachrichten. Reports observations of Saturn's satellites and orbit of Gamma Virginis.
Annibal de Gasparis's new planet Psyche. Alexander von Humboldt selected its name. Other new planet, found by [C. Robert] Luther, was named Thetis by F. W. A. Argelander. Detected new nebula on 26 Apr. Nervous trouble interrupting Hind's search for planets.
Glad that JH approves introducing Julian dates. Notes their use in American lunar tables. Positions of three new nebulae.
[Jean] Chacornac found nebula in Coma Berenices that JH thought had disappeared. It is highly variable. Notes on nebulae of variable magnitude.
Positions of new comet, calculated from 'Florence observations.'
Compares positions for variable nebula in Taurus reported by several astronomers. Plans to incorporate JH's suggestion regarding Julian calendar into more convenient table of dates.
E. W. L. Tempel's 1860 discovery of nebula near Merope.
Computation of Alpha Centauri's angle and distance, derived with JH's 'graphical method.' Compares this with results by other astronomers.