Achromatic, high-quality 2x Barlow - 1.25 inches with integrated T2 thread.
This 2x Barlow lens can be used photographically and visually.
The attached T2 thread.
The special feature of the B2T is the attached T2 thread.
You can connect your SLR camera (with an optional T-2 ring) directly to the Barlow and use it as a photographic Barlow lens
A 1.25 inch eyepiece is simply inserted into the Barlow lens and clamped with a side fixing screw. Then insert everything together into the focuser.