Explore Scientific 3X Focal Extender - 1.25" - FE03-125 7X Binoculars About the Celestron Luminos 2"

About the Celestron Luminos 2" Barlow Lens

Each Omni goes through a two-step anodizing process to prevent reflection from the top eyepiece barrel

Phase and Dielectric Coated

It’s equipped with an integrated rotation mechanism for polarizing filters

Baader Astro Conversion Filter for Canon DSLRs Specifications

Explore Scientific 3X Focal Extender - 1.25" - FE03-125 7X Binoculars About the Celestron Luminos 2"About the Explore Scientific 3X Focal Extender 1. 25" An Explore Scientific Focal Extender does exactly what the name implies; it extends the effective focal length of the lens that it is used in conjunction with, thus producing higher magnifications for imaging and visual applications. Focal extenders are similar to a Barlow or tele negative lens, but there is one important difference between the two that you will want to take into consideration,