About this product
Part Number: TKA00597
A premium two-element achromatic doublet Barlow / Extender.
Fully multi-coated optics and internally blackened threads for enhanced contrast.
Initially designed for use in the optical path before a star diagonal to provide a 2x magnification but the short design (3.5") enables it to also be used after the diagonal - although the magnification factor is reduced.
Features a non-marring compression ring that holds your eyepieces without marring their nosepiece
Eyepieces are gripped with a convenient knurled twist-type collar (n losing thumbscrews).
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