May 11 Rare Autograph & Book Auction
This lot is closed for bidding. Bidding ended on 5/11/2023
Rare autograph work of both Sir William Herschel and his younger Sister Caroline Herschel.
Sir William Herschel notes on clock time adjustments, dated July 20, 1795, and affixed to a paper. Caroline Herschel's notes on clock time adjustments are also affixed to the sheet. 8.5" x 11.25"
Frederick William Herschel (15 November 1738 – 25 August 1822) was a German-born British astronomer and composer. On 13 March 1781 while making observations he made note of a new object in the constellation of Gemini that would eventually be confirmed to be a new planet, with the name Uranus. This was the first planet to be discovered since antiquity, and Herschel became famous overnight. Herschel pioneered the use of astronomical spectrophotometry, using prisms and temperature-measuring equipment to measure the wavelength distribution of stellar spectra. In the course of these investigations, Herschel discovered infrared radiation. Other work included an improved determination of the rotation period of Mars, the discovery that the Martian polar caps vary seasonally, and the discovery of Titania and Oberon (moons of Uranus) and Enceladus and Mimas (moons of Saturn).
Caroline Herschel (16 March 1750 – 9 January 1848) was a German-born British astronomer, whose most significant contributions to astronomy were the discoveries of several comets, including the periodic comet 35P/Herschel–Rigollet, which bears her name. She was the younger sister of astronomer William Herschel, with whom she worked throughout her career.
With One of a Kind Collectibles LOA
William Herschel ( Discovered The Planet Uranaus) & His Sister Caroline Herschel also a famous Astronomer- Autograph manuscript time observations
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