The 'equatorial coude' refracting telescope,Paris Observatory,France - aperture 7.5cm. The tube is 'bent' and light fed to the observer by two mirrors,one in front of the telescope and the other at the 'elbow'. Engraving from A Handbook of Descriptive Astronomy by George F Chambers (Oxford,1890) | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / UIG / Universal History Archive |
Taille de l’image : | 3567 px × 2455 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |