No chromatic aberration, compression ring to protect your eyepieces. | Very high-quality aluminium housing with rubber armoured grip. | Take high-end quality planetary photos, multi-layer, multi-coating for high contrast. | Simple to increase your eyepiece's magnification, no chromatic aberration. | Premium apochromatic Barlow lens with four lens design.

The 1.25 barrel is internally threaded for use with Alstar 1.25" eyepiece and imaging filters. The inside of the 5x High-Power Barlow's barrel is also glare threaded to help prevent internal reflections. | The Alstar High-Power 5x 4-Element Barlow Lens quintuples the power of any 1.25" telescope eyepiece. | Featuring a high-quality 4-element lens design, the Alstar High-Power 5x Barlow will render exquisite images without introducing additional chromatic abberation while providing a monstrous 5x power boost. | The Barlow lens elements are fully multi-coated with anti-reflection coatings to ensure maximum light throughput for bright, crisp views. | The lenses are also edge-blackened to further maximize contrast and sharpness.

Premium apochromatic Barlow lens with four lens design. | No chromatic aberration, compression ring to protect your eyepieces. | Take high-end quality planetary photos, multi-layer, multi-coating for high contrast. | Simple to increase your eyepiece's magnification, no chromatic aberration. | Very high-quality aluminium housing with rubber armoured grip.