Offers 1.25-inch inner mounting sizes on the side of the telescope.
Fully metal construction and anodizing aluminum process, durable for long time use. Use this extension tube for getting the correct image scale or the exact spacing required for reducers or field flatteners. The extension tube has a T2 interior thread and a T2 exterior thread for solving spacing problems in astrophotography and eliminates a range of focusing problems. The required spacing can be achieved by combining several extenders of differing lengths.