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Description
About this item：
The value must have 2x barlow lens doubles the magnification of any 1.25-inch eyepiece; double the capacity of an existing set eyepieces at the cost of a single eyepiece.
Quality aluminum stock and black anodized body
2-Elements lenses with multi coated optics design make image more crisp and sharp
Qulity and shorty aluminum stock and black anodized body for a convenient long term use
2 element one group broadband green film multi coated optical glass; the housing is blackened to maximize image contrast; both that gets high quality observation without additional chromatic.
Description：
A Barlow lens is the astronomy accessory that keeps on giving! Insert it between your eyepiece and your telescope to get double the magnification instantly. Let’s say you have two eyepieces in your accessory case, a 10mm and a 25mm. Add a Datyson 5P9962 2X Barlow Lens to the mix, and now you have four magnifications to choose from. Combining this lens with the 25mm provides double the magnification, or the equivalent of a 12.5mm eyepiece, while the 10mm gives you the power of a 5mm eyepiece.
Eye relief is the distance your eye has to be from the first lens in the eyepiece in order to see the full field of view. When you use a Barlow lens with an eyepiece, you get double the magnification, but the eye relief is not affected. This is a good thing, because normally the shorter the focal length of the eyepiece, the less eye relief you have. In other words, a standard 10mm eyepiece, as a general rule, will have better eye relief than a 5mm eyepiece. Bonus!
The Datyson 5P9962 2x Barlow comes in a sleek, silver package. The two-element optics are fully multi-coated, and the edges of the lenses are blackened to cut down on internal reflections. The 1.25” barrel will fit in standard 1.25” focusers and diagonals, and the Barlow will accept 1.25” eyepieces. A metal thumbscrew locks the eyepiece firmly in place.
Specifications：
Brand: Datyson
Product No.: 5P9962
Commodity barcode: 6971150820678
Origin: China
Magnification: 2X
Lens material: optical glass
Lens coating: FMC-green
Mirror group structure: glued lens
Interface size: 1.25 inches (31.7 mm)
Lens material: aluminum alloy
Net weight: 71g
Gross weight: 105g
Package Include:
2X Barlow lens * 1
Dust cover * 2
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