Additional approaches to resolving TM's mural circle problem [see JH's 1835-2-5].
Showing 21–40 of 187 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.
Additional approaches to resolving TM's mural circle problem [see JH's 1835-2-5].
Discusses tidal observations made at the Cape and a paper by WW on tides. Praises viewing conditions at the Cape. Describes political struggles at the Cape.
About race relations in South Africa, and anti-slavery movements in England.
Intends to dispatch a parcel of books to JH and has he anything he would like to include in the parcel?
Has just finished the observations of Mars and the circle is free from any particular use. Further comments on his query regarding the motion of the center of the mural circle. Would like JH's assistance on the examination. Has had some brass ingots stolen from the observatory.
Has just been made president of the R.A.S. No news of John Pond's retirement. R. A. Cauchoix's telescope has arrived. Printing of his 1834 observations are well advanced.
Sends the projection of Monday's readings and one of those from the lever of contact for comparison; comments on this.
Describes the tests and adjustments JH has recommended to Thomas Maclear to try to remove anomalies from the functioning of the transit circle at the Royal Observatory, Cape of Good Hope; also comments on the beauty of some southern nebulae.
Has replied to Richard Sheepshanks in the Memoirs of the Astronomical Society. Is surprised how near he got to the general figure described by the Circle Centre. Comments on calculations he intends to carry out. Cannot say decidedly that Zeta Octantes is double; it is doubtful seen through the 8-ft. transit.
MH discusses her determination to educate the Herschel children herself.
JH describes his sweeps of Scorpio. Writes that the Milky Way is 'extremely curious and interesting.' Has collected a large catalog of southern nebulae, many never before detected. JH's search for Halley's Comet has been unsuccessful thus far.
More on the mural circle [see JH's 1835-2-7].
Reports erecting his telescopes at the Cape and on his observations, especially of double stars, during his first year there.
Describes JH's location at the Cape and his observational sweeps, lists nebulae and double stars, as well as comet and eclipse observations. [Letter finished on 1835-3-5.]
Would like a note of JH's speech to the Supporters of Infant Schools, last week. Comments on the educational facilities at the Cape.
Even though JH has not written, AQ has received news from JH's compatriots. Asks about JH's health. Has not really used equatorial. Continues work on terrestrial magnetism and includes observations. Asks if JH has received last part of translation of JH's work on optics.
Found two planetary nebulae not listed in any catalog; hopes to show them to JH tonight.
[Otto] Rosenberger has calculated perturbations of Halley's Comet by the inner planets. [Wilhelm] Beer and [J. H.] Mädler have a map of the moon and have located two moving spots on Jupiter. F. W. Bessel's assistant has reduced James Bradley's observation to constants of aberration and nutation.
Apologizes for his erroneous reduction. Thanks TM for his list of 'Zenith points.'
Has been unable to locate the planetary nebulae; did JH give their places correctly, or is the instrument unequal to the task? Sends a comparison of John Pond's declinations and the Cape Zenith distances. Comments on the latitude of the Cape. The Hungerford got off yesterday.