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Antares 1.25" 2x Barlow Lens # UB2S

5.0 (1 Reviews) Read Reviews Write Review
Brand Antares
Part Number UB2S
Availability available

Product Info

Manufacturer Description

This high performance Antares barlow # UB2S doubles the power of any inserted eyepiece. It features a fully-multicoated achromatic design, internal darkening and edge-blackened lenses.Suitable for high contrast, high power applications in any telescope. Threaded to accept standard 1.25" astronomy filters. Made in Canada using Japanese optics (not made in Japan as indicated in the photo).


  • Barrel size: 1.25" / 31.7mm
  • Magnification factor: 2x
  • Type: Achromatic
  • Coatings: Fully multicoated
  • Clear aperture = 1.06" / 27mm
  • Weight: 4.4oz / 125g
  • Total length: 3.16" / 80.4mm
  • Length of lower chrome barrel: 1.47" / 37.5mm
  • Length of upper black barrel: 1.69" / 42.9mm
  • Filter threads: Yes (standard 1.25" filter threads, M28.5x0.6)
  • End caps: Yes (2) but subject to change without notice
  • Country: Made in Canada

Note that the use of any optical element like barlows and focal reducers changes the focus point of your telescope, requiring additional in-focus or out-focus travel. The exact amount of focus travel required will depend on the optics and mechanics of your specific set-up (telescope, diagonal (if used), barlow, and eyepiece). Hence, be aware that you may not be able to reach focus with all eyepieces or in all configurations with a given barlow.


5.0 (Based on 1 Reviews) 100% of reviewers recommended this product.
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      User Notes:
      Review by Tower3 of San Diego.
      Apr 29, 2012

      5.0 Antares 2X Barlow is a great buy


      Quality Lenses,Accurate,Easy to Use




      I'd been looking for a decent Barlow to replace the one that came in one of those lens/filter kits in the metal case. In fact the only thing I use now from that kit is the case itself. The replaced unit had a serious problem with chromatic aberation, I didn't realize the problem until I started getting decent eyepieces. This Agena unit has turned out to be a very good purchase the improvement is immediatly noticed and fairly dramatic. I've bought my last 2X Barlow.

      Bottom Line: Would you recommend this item? Yes
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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