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Astronomical instruments: achromatic telescopes
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Astronomical instruments: achromatic telescopes
Astronomical instruments: achromatic telescopes and dynameters.. Astronomical instruments- achromatic telescopes and dynameters. Copperplate engraving by Wilson Lowry after a drawing by J. Farey from Abraham Rees Cyclopedia or Universal Dictionary of Arts, Sciences and Literature, Longman, Hurst, Rees, Orme and Brown, London, 1820
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Abrahamrees Astronomicalinstrument Cyclopedia Sciencesandliterature Universaldictionaryofarts
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1. Title: A Glimpse into the Cosmos: Astronomical Instruments of the Past - Achromatic Telescopes and Dynameters 2.. This copperplate engraving, created by Wilson Lowry after a drawing by J. Farey, offers a fascinating glimpse into the world of astronomical instruments from the early 19th century. The image, taken from Abraham Rees' Cyclopedia or Universal Dictionary of Arts, Sciences and Literature, published by Longman, Hurst, Rees, Orme and Brown in London in 1820, showcases two essential tools used by astronomers during this period: the achromatic telescope and the dynameter. 3. Description: At the heart of the engraving lies a magnificent achromatic telescope, an instrument that revolutionized astronomy by significantly reducing chromatic aberration, a common problem in earlier refracting telescopes. The achromatic telescope, with its elegant design and meticulously crafted lenses, allowed for clearer, more accurate observations of celestial bodies. 4. Surrounding the telescope is a dynameter, an instrument used to measure the apparent diameters of celestial bodies. The dynameter, with its intricate gears and graduated scales, provided astronomers with precise measurements, contributing to the advancement of astronomy and our understanding of the universe. 5. Historical Significance: This engraving offers a unique window into the past, showcasing the ingenuity and curiosity of scientists during the 19th century. The achromatic telescope and dynameter, along with other astronomical instruments, played a crucial role in the exploration and discovery of the cosmos. This image is a testament to the relentless pursuit of knowledge and the enduring allure of the stars.
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