Regarding the apparent disappearance of a nebula. Comments on this.
Showing 1–12 of 12 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.
Regarding the apparent disappearance of a nebula. Comments on this.
Cannot see how there can be two opinions regarding JH's catalogue of nebulae. Suitable work for the R.A.S. to publish. Further regarding the lost nebula in Taurus.
Has been considering how to incorporate JH's suggestions regarding the insertion of the Julian dates in the Nautical Almanac. Would like his views. Quotes extracts from a letter of U. J. J. Leverrier.
Encloses slips to show how he has incorporated the Julian dates. Agrees with the American lunar tables. The nebula in Taurus is invisible to William Lassell.
Was interested to receive the information regarding another missing nebula; would like to mention it at the R.A.S. The late George Bishop's observatory is now being rebuilt at Twickenham. Will return N. R. Pogson's table of Julian dates tomorrow. Has adopted the first of JH's suggestions.
Returns N. R. Pogson's tables. Has received a communication from [W.?] Lummis concerning a dark spot on the sun's disc. Has been unable to make any calculations yet.
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.
Reports the disappearance of a nebula seen by William Herschel in Coma Berenices, but which H. L. d'Arrest did not locate in 1850.