Darquier de Pellepoix Antoine

Lettres sur L'Astronomie Pratique, 1st edition, 1786 [with] 'Uranographie ou Contemplation du Ciel' (2nd edition)

Paris: Chez Didot, 1786. 1st edition, octavo, text in French, pp. (iv) 164, two volumes bound as one, two large folding charts (representing the constellations in the Uranography), light foxing prelims and latter leaves, original leather boards, split starting along front joint, few heavy scuff marks and small hole to upper portion rear board, astronomical association stamp to ffep, edges worn. A good copy of this scarce title.

Practical astronomy (pp.1-132) with 2nd edition of 'Uranographie ou Contemplation du Ciel,' (Uranography or Sky Cartography, or Contemplation of the Stars, pp.133-164). A very good copy of this scarce item. Text in French. Darquier (1718-1802) discovered the ring Nebula M57 in 1779. He was also amongst the early observors of the newly discovered planet Uranus in 1781. He calculated an orbit for it, and found that it was a slightly elliptical orbit outside that of Saturn. Item #82071

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