TS 2.5x Barlow Lens 1.25" apochromatic - full color correction

TS Optics APO Barlow 2.5-fold - 1.25" plug-in diameter

A high quality three-element Barlow for observation and photography:

A Barlow that meets very high standards, visually and photographically. Due to the three-element APO design no loss of quality is detectable even under critical observation. The APO Barlow can be used on virtually any telescope. The short Barlow fits into any 1.25" socket from Newton telescopes, but can also be used behind normal Zenit mirrors & prisms, and clamps the accessories gently and accurately with a ring clamp.

Due to the special optical construction (short design), the Barlow places the focus 10mm further inwards, compared to the focus position without Barlow. So you have to adjust the focuser about 10mm inside when using the Barlow.

The 3-element optics of the TS APO Barlow
The three-element Barlow element is fully multi-coated for a clear and high-contrast image.

Technical specifications:

Extension factor: 2.5 times - visually
Optical design: 3 element APO design with air gap
Free opening: 23mm free opening
Compensation: Full multi-coating on each glass - air surface
Lens Edges: Blackened against reflections
Construction: Complete metal housing, short construction
Clamping: Precise clamping of the clamp by ring clamping

Delivery:

- 2.5x APO Barlow - complete
- Protective plastic cover for both ends