Explore Scientific 2x Explore Scientific Focal Extender 2" Barrel 4 Element
- Provides excellent control of chromatic and spherical aberration, and a flatter field-of-view compared to standard barlows.
- Fully multi-coated.
- Lens edges and all internal metal surfaces are blackened to maximize image contrast.
- 2" main tube has two thumbscrews and 1.25" adapter has one thumbscrew. Both feature compression rings.
- Tapered 2" barrel for safety.
- Includes one dust plug and one end cap.
- Comes in a beautiful foam-padded box.