Equatorial telescope,19th century

Numéro d’image : 11696980
Equatorial telescope,19th century
Equatorial telescope. 19th-century illustration of an equatorial telescope designed by an Edward Nairne. An equatorial mount is used to track an astronomical object across the sky. Compared with other mounts,an equatorial mount is aligned with the Earth's axis of rotation,ensuring that adjustments only need be made around one axis and can be done at a constant speed rather than a variable speed. Artwork published in 'Description and Use of a New Constructed Equatorial Telescope or Portable Observatory,Made by Mr Edward Nairne,London' in volume 61 (1771) of the journal 'Philosophical Transactions',published by the Royal Society of London
Licence : Droits gérés
Crédit: Science Photo Library / Royal Astronomical Society
Taille de l’image : 3372 px × 5705 px
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