About the principles whereby the nomenclature of the constellations might be reformed.
About the principles whereby the nomenclature of the constellations might be reformed.
Comments concerning Francis Baily's book on John Flamsteed.
Thanks TM for the right ascension reductions. Saw the comet [Halley's] last night, but it was dimmer than before.
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.
Star within 20 seconds of the nucleus of the comet [Halley's].
Has installed his astrometer to help judge star magnitudes; also makes a comparison of barometric observations with those of TM.
Sending some equipment back and forth, and some astrometer readings.
Arranges to have tea with TM tomorrow at the Royal Observatory.
Sends observations of several more standard stars, and of the comet.
Asks TM to accompany himself and Daniel Cloetes in hunting a leopard.
Does not want to compute precessions for each individual star.
Thanks TM for restoring JH's micrometer.
Believes that JH and TM can compile a better comet catalog together than they could separately.
Notes a discrepancy in TM's latest observations and those of Thomas Brisbane.
Congratulates TM on the birth of his son, George.
A note along with a request from Niccolo Cacciatore for some observations that JH says he cannot make.
Inquires about a star not found in TM's list of comet stars. Believes that their comet collaboration is going well.
Sends formulae for dealing with the apparent differences, in viewing the comet and compared star, due to the effects of parallax and refraction.