Sky Mentor 2x Barlow with T-Thread - 1.25" - SKYM-001 Pier Adapters The maximum circumference of top

The maximum circumference of top opening with cover closed 27 inches (9 inch diameter)

For attachment

It also has a 2" ClickLock-Clamp on the other end to hold your 2" eyepiece

Achromatic Refractor with a 60mm aperture

The ingenious combination of simple yet effective operating mechanisms with the large aperture Newtonian reflector telescope gives the Dobsonian telescope a unique and successful acceptance by astronomers around the world

Sky Mentor 2x Barlow with T-Thread - 1.25" - SKYM-001 Pier Adapters The maximum circumference of top2x Barlow with T Thread Connection 1. 25" Barrel Take your view of the sky to new heights with the Sky Mentor 2x Barlow! This 1. 25" 2x Barlow Lens for telescopes magnifies your vision, enabling you to see more of the stars and galaxies above. With a T thread bringing it all together, you can explore the beautiful mysteries of the night sky like never before. So, what are you waiting for? Discover the wonders of the universe now! *Use with your DSLR t