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50.0 MB (5.0 MB compressed)
5125 x 3407 pixels
43.4 x 29.0 cm ⏐ 17.1 x 11.4 in (300dpi)
PASQUALE SORRENTINO / SCIENCE PHOTO LIBRARY PASQUALE SORRENTINO / SCIENCE PHOTO LIBRARY
19th-century telescope. This is the Fraunhoffer- Reichenbach refracting equatorial telescope. It was built in Germany in 1815 by Joseph Fraunhoffer and Georg von Reichenbach. It works using lenses to refract light, rather than the mirrors used to reflect light in modern telescopes. It is mounted on an equatorial mount (centre left), with the set of wheels used to move it to point it at different areas of the sky. It was made from brass, steel, silver, cast iron, rosewood and aluminium. It is over 3 metres long, and has a focal length of 302 centimetres. Photographed in the museum of the Astronomical Observatory of Capodimonte (OAC), in Naples, Italy.
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