Great Equatorial Telescope Paris 1860
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Great Equatorial Telescope Paris 1860
Engraving of the Great Equatorial Telescope of the Paris Observatory. This view shows an equatorially mounted refracting telescope of 31 cm (12.8 inch) aperture made by the French maker Lerebours. The telescope was installed in 1860 within the western dome of the main building at the Paris Observatory. An equatorial mount is a mount for instruments that follows the rotation of the sky (celestial sphere) by having one rotational axis parallel to the Earths axis of rotation. This type of mount is used for astronomical telescopes and cameras. The advantage of an equatorial mount lies in its ability to allow the instrument attached to it to stay fixed on any object in the sky that has a diurnal motion by driving one axis at a constant speed. Coloured illustration from The Heavens by Amedee Guillemin, Publ. Richard Bentley, 1878
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Media ID 6316157
© DAVID PARKER/SCIENCE PHOTO LIBRARY
Axis Cameras Celestial Sphere Diurnal Equator Equatorial France French Natural World Observatories Paris Observatory Refracting Refraction Telescope Astronomical Instruments Norman
EDITORS COMMENTS
This print showcases the Great Equatorial Telescope of the Paris Observatory in 1860. The engraving depicts a magnificent equatorially mounted refracting telescope, crafted by renowned French maker Lerebours. With an impressive aperture of 31 cm (12.8 inches), this instrument was installed within the western dome of the main building at the Paris Observatory. An equatorial mount, as seen in this image, is specifically designed to track and follow the rotation of celestial objects across the sky. By aligning one rotational axis parallel to Earth's own axis of rotation, it allows for precise observation and photography of astronomical phenomena. This type of mount offers a significant advantage by enabling instruments attached to it to remain fixed on any object in the sky that undergoes diurnal motion. The beautifully colored illustration featured here is taken from "The Heavens" by Amedee Guillemin, published in 1878 by Richard Bentley. It provides a glimpse into both scientific and artistic realms as it highlights not only technological advancements but also captures humanity's fascination with exploring and understanding our natural world. This remarkable piece serves as a testament to France's contribution to astronomy and their dedication towards unraveling mysteries beyond our planet's boundaries. The Paris Observatory remains an iconic institution where groundbreaking discoveries continue to shape our understanding of celestial bodies and their movements within the vast expanse above us.
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