Provides the measurements for Beta Aquarius and Alpha 2 Capricorni [see JH's 1847-5-23].
Showing 101–120 of 168 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.
Provides the measurements for Beta Aquarius and Alpha 2 Capricorni [see JH's 1847-5-23].
Finds GA's measurements of Gamma Virginis far away from JH's own, and instructs GA in the best way to measure double star positions.
Asks for new observational data on Gamma Virginis [see JH's 1843-7-18].
Believes GA's measurements [see GA's 1845-10-1] seriously in error, and strenuously defends JH's method.
Further clarification to the moon's motions [see JH's 1848-10-25].
Will consider GA's objections [see GA's 1845-12-27] when JH works further on double star orbits.
Urges GA to print any of John Pond's and Nevil Maskelyne's observations that seem free from serious error [see GA's 1844-8-28].
Has still not received F. W. Bessel's original letter [see GA's 1844-11-16].
Comments on the large number of stars identified in one square degree of sky.
Comments on the unsatisfactory [to JH] resolution regarding the awarding of the annual R.A.S. medal.
Continuing to try to resolve the medal problem [see GA's 1847-2-9].
Thanks GA for the time and trouble he took in the drawn-out debate over the moon's motions [see 1848-9-25 to 1848-10-26].
Seeks GA's help to provide information to complete the obituary notice for Francis Baily [see GA's 1844-9-23].
Seeks GA's opinion about including a specific passage in F. W. Bessel's obituary notice for the R.A.S. Also inquires about the printing of the star catalogues of N. L. Lacaille and J. J. L. Lalande.
Thanks GA for his letter [see GA's 1848-11-27] and brings the whole episode to a close.
Needs some clarification of GA's letter [see GA's 1842-9-16] before JH is ready to reply about the calculating engine.
Thanks GA for exercising GA's usual discretion in the matter of the funding of Charles Babbage's calculating machine [see GA's 1842-9-26].
Concerning Airy's papers recently submitted [see GA's 1842-1-5]. Hopes he will continue to send a report of his experiments and observations.
Reply to GA's letter on Charles Babbage's calculating machine.
Whether a repulsive force from the sun affects the tails of comets and thus the constancy of their orbits.