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29 EUR
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price without VAT: 23 EUR
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Barlow lens GSO 2.5x APO in 1.25 inch frame - apochromatic, three-element optics fully covered with anti-reflective layers ensuring EXCELLENT color correction and very good optical efficiency. Good blackening of the lens sleeve virtually eliminates glare. The main advantage of using Barlow lenses is that they allow you to limit the number of glasses while providing a wide range of available magnifications. For example, having 2 eyepieces with 30 and 15 mm focal lengths, and using a Barlow lens, we get two additional magnifications corresponding to eyepieces with 10 and 5 mm focal lengths. In addition, Barlow lenses do not change the offset of the exit pupil of the glasses ( eye relief ), allow the focus to be extended further from the tube (when we have a problem with sharpening the image) and allow to double the focal length when taking pictures of the sky in the focus of the lens. | • times: | 2.5x | | • optical construction: | three-element, apochromatic | | • barrel standard: | 1.25 inch | | • anti-reflective layers: | FMC | | • weight: | 100 g |
2 years
HOW TO ATTACH A BARL LENS TO A TELESCOPE
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