Contrasts EC's catalogue of comets with that of J. F. Encke.
Showing 1–20 of 36 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.
Contrasts EC's catalogue of comets with that of J. F. Encke.
Confirms measurements of a transit circle.
Thanks EC's for EC's observations made with EC's excellent telescope. Discusses Eta Coronae, Gamma Virginis, EC's drawing of M51, and whether Orion changes, stating that JH is 'no believer in rapid changes in Nebulae yet there may be changes....'
Would like to know where he can obtain JH's observations on double stars. His own recent observations of planets.
Should have written earlier to thank him for the useful catalogue of stars. Weather has been fine, but he is still waiting for his eye tube from William Simms. Remarks on Orion's nebulae.
About observations of Halley's Comet. [In postscript dated 1836-5-3], describes further observations of the comet.
Thanks for meteorological records sent by EC, and asks for some additional information.
Will send a corrected set of Meteorological Observations later. Has not seen the comet, but has seen many shooting stars. Family is in Paris. Will leave 'planches' of his discoveries at this house and they will be delivered to Lady Herschel.
Would like JH to pay them a visit at Markree to see his 'circle' instrument erected. Hospitality will be rough owing to their lack of furniture. Hopes he is satisfied with his own photographic results.
Not sure where JH is now residing. Sending the 13 sets of Meteorological Observations he has made. Will shortly be residing at Brighton for a few months and hopes to meet JH then. The Munich circle is a beautiful instrument.
Thanks for observations; comments on one of his own observations; notes imminent move to Collingwood and birth of seventh child.
Unable to write before as he was packing for his journey home. Regrets none of his northern friends had seen the comet. Its orbit has been calculated as 35.3 years. Remarks on the tail of the comet.
Comments on calculation of orbit of Gamma Virginis; requests any observations EC has of that star.
Thought JH had given up interest in Meteorological Observations until he saw his report in the B.A.A.S. meeting. Would like his comments on Meteorological Observations to be made at Nice to where he is now going. Is taking the big object-glass and eye pieces.
Is shortly leaving for the Tyrol. Has been engaged in unsuccessful comet hunting. Has found stars not in JH's catalogue and comments on these.
Encloses copies of configurations of nebulae clusters and explains his readings. Has he heard of Macedoine Melloni's water eye piece? [Andrew] Graham has invented a new micrometer.
Comments on EC's observations of some nebulae and comets.
Delayed writing in the hope of obtaining some interesting news. Would like a name for some asteroids. Andrew Graham's micrometer works well. Further observations on various stars.
Talking about the possibility of discovering an 'Irish Asteroid' or perhaps an exterior planet; suggests names for them.
Would be pleased if JH would look out for 'shooting stars' on certain specified evenings.