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.
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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.
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.
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.