{"product_id":"1806-opuscoli-astronomici-calandrelli-vega-parallax-vellum-engraved-plates-1","title":"1806 Opuscoli Astronomici Calandrelli Vega Parallax Vellum Engraved Plates","description":"An exceptionally scarce early-19th-century Italian astronomy volume containing important observational work concerning the annual parallax of Vega, or Alpha Lyrae. Published in Rome in 1806, this volume comes from the formative period when astronomers were attempting to detect stellar parallax and obtain observational evidence of Earth’s motion around the Sun.\u003cbr\u003e\u003cbr\u003eOpuscoli Astronomici, by Giuseppe Calandrelli and Andrea Conti, professors at the Gregorian University of the Collegio Romano and directors of its astronomical observatory. Rome: Stamperia Salomoni, 1806. Dedicated to Pope Pius VII.\u003cbr\u003e\u003cbr\u003eThe principal work contains 209 numbered pages and features extensive astronomical calculations, observational tables, an engraved view of the Specola Astronomica del Collegio Romano on the title page, and two large folding engraved astronomical plates.\u003cbr\u003e\u003cbr\u003eAlso permanently bound into the volume is the separately titled work:\u003cbr\u003e\u003cbr\u003eRisultato di Varie Osservazioni sopra la Paralasse Annua di Wega, o α della Lira.\u003cbr\u003e\u003cbr\u003eThis additional work concerns observations of the annual parallax of Vega and is physically bound into the book—it is not loose, removable, or merely laid in.\u003cbr\u003e\u003cbr\u003eCalandrelli was an Italian astronomer, mathematician, professor, and director of the Collegio Romano observatory. His work on Vega forms part of the long scientific effort to detect stellar parallax, a phenomenon closely connected with observational confirmation of the Earth’s movement around the Sun. His early astronomical publications are seldom encountered individually, particularly in period bindings.\u003cbr\u003e\u003cbr\u003eBound in period full vellum with ruled spine compartments and a red leather spine label lettered “Opuscoli Astronomici.” The volume bears older R.K.O. stamps and inventory markings on the endpapers, together with a handwritten ownership name.\u003cbr\u003e\u003cbr\u003eCondition: An unrestored antiquarian volume showing substantial age and use. The vellum binding is soiled, rubbed, scratched, stained, and somewhat warped, with wear at the corners and spine ends. The front inner hinge is substantially exposed and weakened, and the text block has movement and separation from the binding, as clearly shown in the photographs. Pages exhibit age-toning, scattered foxing, occasional staining, waviness, and edge wear. Both folding engraved astronomical plates are present and retain their original folds, with expected age-toning and handling wear.\u003cbr\u003e\u003cbr\u003ePlease review all photographs carefully. The photographs form an important part of the condition report and show the exact volume being offered.\u003cbr\u003e\u003cbr\u003eA genuinely scarce scientific volume combining early stellar-parallax research, Roman observatory history, papal-era science, extensive astronomical tables, two folding engraved plates, and a period vellum binding.\u003cbr\u003e\u003cbr\u003eSKU V\/3","brand":"Second Chapter Book Co.","offers":[{"title":"Default Title","offer_id":67706042614008,"sku":null,"price":1800.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0859\/1025\/7912\/files\/e9a6c141-4c0f-4f82-82ef-8aa9b2ae2c20.jpg?v=1792225053","url":"https:\/\/secondchapterbookco.com\/products\/1806-opuscoli-astronomici-calandrelli-vega-parallax-vellum-engraved-plates-1","provider":"Second Chapter Book Co.","version":"1.0","type":"link"}