Polishing telescope mirrors.
Showing 41–60 of 76 items
Polishing telescope mirrors.
Asks TM to attend a meeting of the Cape of Good Hope Association for Exploring Central Africa.
Has decisively mapped Saturn's sixth satellite; doubts, however, that he will ever see the seventh. Asks CH to inform Friedrich Bessel of his observation.
[Postscript to a letter by Margaret Herschel:] JH notes that he has finished the reduction of the first 9 hours in Right Ascension of his southern nebulae and double stars.
Notes discrepancies between TM's and Thomas Brisbane's observations.
Exhausted from his meteorological observations, JH will not keep his appointment for tomorrow with TM.
Asks TM to return JH's book of star magnitudes.
Asks TM whether he plans to work today.
Reports that he viewed Halley's Comet from 1836-1-25 to 1836-5-10. Now studying sunspots and solar radiation. Comments that the sun has more spots than JH previously thought. Has been busy during the December solstice determining the constant of solar radiation.
Wants to borrow TM's carpenter. Found a faint planetary nebula.
Agrees with George Airy that Mercury should be studied more closely. Discusses TM's researches of N. L. Lacaille's Northern Extremity.
Reports the birth of John Herschel, JH's sixth child and third son.
Eliminated plans to visit Rio de Janeiro on the Herschels' return home, which will enable them to visit Hanover. Notes that JH's rheumatism attacks have interfered with his observations. JH considers his sweeping work finished. Has sent to the R.S.L. the first six hours of JH's 'Southern Catalogue of Nebulae and Double Stars' along with the micrometric measures of 400 southern double stars made with the equatorial.
Not surprised that the measuring rods broke; knew that they were top heavy. Discusses improvements. Very busy. A horse stepped on JH's foot, but no broken bones.
Sending the spherometer. Discusses stars and nebulae observed near the South Pole.
Reports that Dr. Andrew Smith received a grant of £1500 from the British government.
Regarding the meteor seen in New York. Gives tables of meteors seen during a specified time. Comments on the phenomenon of meteors. Sun spots.
Comments on some parts of CB's Ninth Bridgewater Treatise, especially on CB's mathematical estimating of the credibility of miracles. JH shows that such a process cannot work. [Letter finished 1837-10-25.]
Has been very busy observing so has had little time to spare for writing letters. Remarks on the recent star catalogues which he has received. Would FB bring Capt. J. A. Lloyd's case to Frederick Augustus (Duke of Sussex). Sun spots. Meteors in N. America and those at the Cape.
Would FB convey his thanks to the R.S.L. for the award of their medal. Has observed the whole of the southern hemisphere twice. Is pleased to hear of the American support for science.