Baroque lens GSO 2.5x APO in a 1.25 inch frame - apochromatic, three-element optics fully coated with anti-reflective layers providing PERFECT CORRECTION OF COLORS and very good optical efficiency. Good blackening of the lens sleeve virtually eliminates reflections. The basic benefit of using Barlow's lenses is that they allow you to limit the number of glasses while providing a large span of available magnifications. For example, having 2 glasses with 30 and 15 mm focal lengths, using the Barlow lens we get an additional two magnification corresponding to 10 and 5 mm focal length spectacles. In addition, the Barlow lens does not change the eye- shadow offset of the eyepiece ( eye relief ), allows you to focus farther away from the tube (when you have a problem with sharpening the image) and allow you to extend the focal length twice while taking pictures of the sky in the lens focus. | • Multiplicity: | 2.5x | | • Optical construction: | three-element, apochromatic | | • Diameter of binding: | 1.25 inches | | • Anti-reflective layers: | FMC | | • Weight: | 99 g |
2 years
HOW TO FIX THE LIGHT TELESCOPIC LENS
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