Antares 2" 1.6x Barlow Lens with Twist-Lock Adapter # 2UBSTL

Our #: ZZOBAR-ZZAN-2UBSTL
Mfg #: 2UBSTL
Our Price: $105.00
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Out of Stock
Availability: Item has been discontinued by Agena and we no longer carry this item

Product Details

New model with twist lock adapter instead of set-screws.

For observers who want to power-up their 2" eyepieces, the Antares model 2UBSTL barlow lens with twist lock offers a 1.6x increase in magnification and reduced spherical aberration with all oculars. With a clear aperture of 1.64" (41.8mm) and a short length tube, this fully multicoated achromatic design will work with telescopes with the 2" format, including those using a 2" diagonal.

This new version of Antares' popular 2UBS barlow features an integrated twist-lock adapter / clamping mechanism to securely center and hold your eyepiece. The inner compression ring is made of polypropylene and will not mar your eyepieces.

Features edge-blackened elements, and internal baffling. When used with a diagonal, this barlow will provide approximately 2.4x if placed before the diagonal or 1.6x if inserted into the diagonal.

Specifications:

  • Barrel size: 2" / 50.8mm
  • Magnification factor: 1.6x
  • Type: Achromatic
  • Coatings: Fully multicoated, Blackened lens edges
  • Clear aperture = 1.64" / 41.8mm
  • Weight: 9.2oz / 261g
  • Total length: 2.87" / 73mm (+/- 2mm depending on exact position of clamping stop)
  • Length of lower chrome barrel: 1.16" / 29.6mm
  • Length of upper black barrel: 1.71" / 43.4mm
  • Maximum width = 2.35" / 59.8mm
  • Filter threads: Yes (Standard 2" filter threads, M48x0.75)
  • End caps: Yes (1 - lower only) but subject to change without notice
  • Country: Assembled in Canada using Japanese optics

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.

Please note: A couple of tiny dust particles between lens elements, uneven lens edge blackening, very minor coating blemishes, or even a very small fine lens scratch or two are very common in this Antares product and must be accepted as normal. However, these will not impact optical performance.

Size Format 2 inch
Magnification Factor 1.6x
Number of Lens Elements 2
Lens Coatings Fully multicoated
Total Length 2.87 inches / 73 mm
Length of Nosepiece 1.17 inches / 29.6 mm
Outside Length of Upper Body 1.71 inches/43.4 mm
Insertion Depth
Max Diameter Excluding Thumbscrew 2.35 inches/ 59.8 mm
Clear Aperture 1.65 inches / 41.8 mm
Weight 9.2 oz / 261 g
Barlow Lens Cell Removable No
Filter Threads at Bottom of Barlow Cell Yes - 2" (M48x0.75) Filter Threads
Filter Threads Between Barlow Cell and Tube N/A
Barrel Type Smooth-sided
Compatible Agena Bolt Case (with Screw Removed)
Compatible Bolt Case (with Screw Attached) N/A
Number of Thumbscews 0
Thumbscrew Thread Specification N/A
End Caps (Subject to change without notice)
Compression Band/Ring in Eyepiece Holder Yes
Country of Manufacture Canada