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The discerning observer will want to take a close look at the model UB2SD Barlow. With 27mm of clear aperture and full mulitcoating, this 3-element apochromatic design delivers high contrast images with superior color correction. Made in Japan.
This new version of Antares' popular UB2SD barlow features an integrated twist-lock adapter to securely center and hold your eyepiece. The inner compression ring is made of polypropylene and will not mar your eyepieces. Unscrewing the twist-lock ring exposes a male T-thread underneath which can be used to couple imaging devices with the barlow.
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