Has compared TM's observational measurements with those of the Brisbane catalogue, and finds TM's observations to be better; is working on a star photometer.
Showing 21–40 of 75 items
Has compared TM's observational measurements with those of the Brisbane catalogue, and finds TM's observations to be better; is working on a star photometer.
JH's observations of the comet [Halley's], together with comments on constellation nomenclature and stellar magnitudes.
Calculates the location of [Halley's] comet.
Observation of Halley's Comet. Sends servant to pick up information on star 'Constants.'
Star within 20 seconds of the nucleus of the comet [Halley's].
Encloses the list in JH's own handwriting. Has placed two silver wires in the eye piece of the micrometer. Will JH secure him some cobweb for placing in the micrometer.
Sends the original of the barometer observations as he cannot spare the time to copy them. Had hoped to have the Brisbane stars ready on Monday. Comet was invisible last night.
Has installed his astrometer to help judge star magnitudes; also makes a comparison of barometric observations with those of TM.
Dr. Andrew Smith called yesterday. Has succeeded in establishing a postal system for the Observatory. The comet was faint last evening. Had a parcel from the Admiralty but no word about the tide gauge. Sends the Simon's Bay observations, also the P. P. Barraud chronometer, which loses time at a great rate.
Sending some equipment back and forth, and some astrometer readings.
Arranges to have tea with TM tomorrow at the Royal Observatory.
Returns the hourly observations of the last equinox. There will be a meeting of the Institute tomorrow. Has removed the silver lines from the mural circle and replaced them by Bermuda cobwebs. Would like to insert these in JH's micrometer. Has been busy calculating a large table of precessions in R.A. Capt. Alexander should desist from newspaper writing.
Letters from W. H. Smyth. Notes on Halley's Comet and possible planet sighting.
Sends observations of several more standard stars, and of the comet.
Believes his acquaintance with the comet is drawing to a close. A 30" transit was placed in the meridian last night. Returns the Pulkova observations. Believes the bad weather may have upset Lady Herschel's journey.
Asks TM to accompany himself and Daniel Cloetes in hunting a leopard.
Mural and transit are at JH's command. Will have pleasure in joining him on Saturday. Has a good supply of balls and will procure some goose shot.
Does not want to compute precessions for each individual star.
Has asked Dr. Andrew Smith, Capt. J. E. Alexander, and their friends for Saturday; hopes JH can join them. Has recognized fifteen of the November cometary stars; they are in Harding's map with one exception. The Ephemeris will require a small correction.
Is proceeding at a respectable speed with the Brisbane list. Has received [Andrew?] Smith's box safely. Saw Dr. Smith last night; he is more reconciled. Many thanks for the trees; the ground is suitable to receive them.