- Double lunette, télescope télescope, l'objectif de l'observatoire astrophysique de Potsdam

• Contributeur: bilwissedition Ltd. & Co. KG / Alamy Banque D'Images
• ID de l’image: BGY2N2
• Taille du fichier: 48,1 MB (4,4 MB Téléchargement compressé)
• Autorisations: Modèle - non | Propriété - non
• Dimensions: 3236 x 5200 px | 27,4 x 44 cm | 10,8 x 17,3 inches | 300dpi
• Lieu: Germany
• Photographe: bilwissedition

Informations supplémentaires

Double - refractor, lens telescope, telescope of the astrophysical observatory in Potsdam, about 1900, Germany which was completed in 1899, from Steinheil in Munich made, From both objectives the bigger one has an opening of 80 cm and a focal length of 12 m and is achromatized for the chemically effective rays. The smaller objective has an opening of 50 cm and 12.5 mms of focal length, the same is for the optical rays achromatisiert, at the ocular end of this telescope there is a position micrometer. Lens telescope, telescope with which the occurring light is collected by one or several lenses and is bundled up in a focal plane.

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• about 1900
• ast
• double
• double réfracteur
• germany which was completed in 1899
• lens telescope
• lentille
• rãfracteur
• télescope
• télescope de l'observatoire astrophysique à potsdam