By Sir John Frederick William Herschel
This Elibron Classics ebook is a facsimile reprint of a 1833 version by way of Longman, Rees, Orme, Brown, eco-friendly, & Longmans; and John Taylor, London. the cupboard Cyclopaedia.
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Additional resources for A treatise on astronomy
When Queen Charlotte died in 1818 her household was dispersed (the King himself died in 1820). Mrs. Beckedorff returned to Hanover, where Caroline, in retirement, was to renew their friendship. Caroline’s comet-searching efforts diminished in later years. xxxv She refers more than once to her “solitude” and described the last months of the year 1813 as being “spent mostly in solitude at home, except when I was wanted to assist my brother at night or in his library”. Her nephew John took the Tripos examination at Cambridge with highest honours in 1814, and after some hesitation decided in 1816 to devote himself to continuing his father’s work at Slough.
In fact, social life was not lacking at Slough. Foreign astronomers came to meet the celebrated Herschel and to see the giant telescope. Caroline in her diary mentions some of them: Giuseppe Piazzi of Sicily, discoverer of the first minor planet in 1801; Jean Dominique Cassini, Director of the Paris Observatory; Andr´e M´echain, her fellow comet-hunter; Marc August Pictet, renowned Swiss physicist. There was also Jerˆome de Lalande of Paris who addressed her as “astronome c´el`ebre”, and the German astronomer Karl Felix Seyffer who referred to Caroline as “the noble Fig.
His telescopes made use of speculum (metal) mirrors which were figured and polished to such perfection as to surpass all competitors. He was admired by leading scientists in Edinburgh and London and was elected a Fellow of the Royal Society. He made telescopes of various sizes up to 18 in. xv When he died, unmarried, in 1768, his brother Thomas came to London to manage the workshop and acquired several mirrors and unfinished telescopes, including one of 12 in. aperture valued at thousands of pounds, originally intended for the King of Denmark.
A treatise on astronomy by Sir John Frederick William Herschel