T-Adapter Barlow Universal - 1.25 inch Also suitable for Newtonian reflectors. Universal 1.25" T-adapter, similar to 122407, but with an additional integrated 2x Barlow lens for visual or photographic use. Doubles the magnification of an eyepiece. With the Celestron T-adapters, 35mm SLR cameras can be connected to the primary focus of the telescope or a spotting scope. This allows you to take terrestrial photographs as well as lunar and planetary images. For deep sky photography, you will need an additional guide scope and a T-ring for the respective camera in addition to the T-adapters.