Binoculars & Telescopes
Alstar 2" ED 2X Dual Power Telescope Barlow Lens for Telescopes
Two-element, fully-multicoated lenses with excellent color correction, sharpness, and image brightness. Very high-quality barlow that is versatile - you can unscrew the lens and screw it into your 2" eyepiece. 2" 2x achromatic Barlow increases the...
https://www.bizrate.co.uk/binoculars_telescopes/alstar-2-ed-2x-dual-oid28490204614.html
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