Museo Galileo
Virtual Museum
Terrestrial telescope
    • Setting:
      Room IX
    • Maker:
      Jacques Tendre de Moulina
    • Place:
    • Date:
      first half 18th cent.
    • Materials:
      cardboard, leather
    • Dimensions:
      length 1470 mm
    • Inventory:
    • Terrestrial telescope (Inv. 2548)
    • Terrestrial telescope (Inv. 2548)

Terrestrial telescope consisting of seven tubes. The tubes, made of cardboard, are covered with green leather (now faded) with gold tooling. The biconvex objective lens, held in the smallest tube, has a diameter of 30 mm, an aperture of 20 mm and a focal length of 1,070 mm. The eyepiece lens, now missing, was accommodated in the largest tube. The second and third tubes contain the two lenses of the erector, which, together with the missing eyepiece lens, formed the compound eyepiece. The magnification is c. 16. The second-largest tube carries the name of "Anthoine Dumner." The smallest tube bears the inscription "Jacques Tendre Iray [?] de Moulina." Neither person has been identified. The instrument dates from the late seventeenth or early eighteenth century and is probably of French construction.