Astromania 2'' Ed 2X Dual Power Telescope Barlow Lens For Telescopes

Astromania 2'' Ed 2X High-Quality Dual Power Telescope Barlow Lens For Telescopes. Most Large Telescopes Have A 2'' Focuser. You Can Use This To Your Advantage By Using A 2'' Barlow Lens And Discovering All The Additional Advantages This Can Offer. The Advantages: Ed Glass Element To Reduce Colour Aberrations 2'' Barlow Lens For 2'' And 1.25'' Accessories 1.25'' Reducing Sleeve For Attaching 1.25'' Accessories Doubles The Focal Length Of The Telescope Large Lens Diameter Gives Excellent Illumination Safety Groove To Stop Lens Falling Out 2'' Filter Thread