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Orto-Uran-2 Soviet lens 250mm/2,5 GOI
Orto-Uran-2 Soviet lens 250mm/2,5 GOI
Orto-Uran-2 Soviet lens 250mm/2,5 GOI
Orto-Uran-2 Soviet lens 250mm/2,5 GOI
Orto-Uran-2 Soviet lens 250mm/2,5 GOI
Orto-Uran-2 Soviet lens 250mm/2,5 GOI
Orto-Uran-2 Soviet lens 250mm/2,5 GOI
Orto-Uran-2 Soviet lens 250mm/2,5 GOI

Orto-Uran-2 Soviet lens 250mm/2,5 GOI

$ 844.8

Availability: 100 in stock
  • All returns accepted: ReturnsNotAccepted
  • Country/Region of Manufacture: Russian Federation
  • Model: Orto-Uran-2
  • Focal Length: 250mm
  • Maximum Aperture: 2,5
  • Brand: GOI
  • Condition: in a good condition

    Description

    Orto-Uran-2
    A series of high-aperture high-orthoscopic topographic anastigmata of Ortho-Urana was created in 1965-1966. In these lenses, it was possible to preserve the same seven-lens optical scheme and, at high apertures (1: 2.5-1: 3), eliminate the asymmetric errors of wide oblique beams, which made it possible to correct the distortion with an accuracy of several micrometers for fields of view of 30-40 °. Superheavy crowns (STC) were used in the positive lenses of the objectives. These lenses were intended for completing the following photo-astronomy installations "FAU-1", "FAU-2", "FAU-2M", "FAU-3", "Fauna".
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