If you need more power than your eyepieces alone can provide, we offer new apochromatic 2.5x and 5x barlow lenses from GSO to give a big magnification boost to any 1.25" eyepiece they're used with. 

Nothing has been compromised in GSO’s latest and finest offerings. Both models feature an air-spaced, three-element, apo design with fully multicoated optics. The housing is precision machined from aluminum stock and black anodized to a hard finish. The lens edges and inner barrel are blackened to provide maximum contrast. Each Barlow includes a safety undercut on the lower barrel and a brass compression ring so that your eyepiece barrels are not marred by the captive set screw. The 2.5x model has a clear aperture of 23mm and the 5x model checks in at 13mm.   For those who need a very high quality Barlow for all-round use, the 2.5x barlow is a very nice step up from the typical 2x barlows commonly found on the market. Made in Taiwan.

For those blessed with great optics and dark skies, the 5x could be an exciting new addition to your arsenal for visual and photographic use. If you've never used such a powerful barlow before, please be aware that to get the best out of this barlow, you need to use it with a good telescope, a good eyepiece and under good seeing conditions.

Special Introductory Offer: Buy both and save! Use coupon code BARY at checkout and get 5% off these barlows for a limited time. Discount does not apply if you purchase only one barlow or to any other items.