The TS Optics 2.5x Apochromatic Triplet Barlow lens offers high image quality without virtually any degradation compared with a fixed eyepiece of the same effective focal length.
The APO Barlow can be used on virtually any telescope and is very short, so it will not usually collide with the mirror or prism in a star diagonal.
The eyepiece or accessory are clamped with a brass compression ring to offer a solid lock without scratching the barrel. The three-element Barlow lens is fully multi-coated for a bright and high contrast image. In addition, the lens edges are blackened for suppression of internal reflections.
|Number of optical elements
|3 air-spaced apochromatic design
|Precise locking by brass compression ring