Astro-Tech 2X Telecentric Extender Barlow for 1.25" eyepieces


Availability: In stock

This Astro-Tech 2x Telecentric Extender, ie a Barlow, is a great way to cleanly double the power of any 1.25" eyepiece in your collection . . .
Our Product #: AT2XTB
Astro-Tech Product #: AT2XTB

Product Description

The Astro-Tech AT2XTB  2x Telecentric extender (Barlow) is going to be a great addition to your collection. The barlow actually breaks down into two pieces.  In one configuration it works great with 1.25" eyepieces for visual work.  You can unthread the eyepiece holder section from the nose piece exposing a 42mm t-thread to allow the 4 element optical section to thread directly to your camera body or t-ring. The nosepiece of the barlow is threaded for filters as well.

By doubling the power of each eyepiece it is used with, this Astro-Tech Barlow effectively doubles the number of 1.25" eyepieces in your collection. It uses a four-element, fully-multicoated optical system for excellent color correction and sharpness as well as controlling vignetting and edge aberations. The body is made of precision CNC-machined aluminum and is anodized for long life. A thumbscrew holds eyepieces in place.

Tech Details

Barrel Size 1.25"
Number of optical elements 4
Power 2x
Warranty 1 year


Review by:
Coming from a shorty barlow, the first thing I noticed was the vignetting and blackouts were significantly reduced. With a 10mm hyperion, I had to actively try to make it black out by moving off axis (I think that's the right term), otherwise it was removed from the equation. brightness and sharpness were pretty much unaffected as well. I don't think you can do better at this price! (Posted on 10/4/2023)
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