William Optics extension tube for 2" barrels. Provides 61.5mm / 2.42" of extension.
WO Quality Fit and Finish
- Precision CNC machined from high-grade aluminum
- Black anodized finish
- Brass clamp ring to protect your precious EPs
- Dual chrome soft screws for secure clamping
- Internally blackened and grooved to maximize contrast
- Tapered barrel 2" nosepiece for added security
- Threaded to accept most standard 2" astronomy filters
- Total Length = 3.79" (96.3mm)
- Outside Length of Upper 2" Eyepiece Holder = 2.42" (61.5mm)
- Length of Lower 2" Nosepiece = 1.37" (34.8mm)
- Weight = 5.6oz (159g)
Also, note that the adapter can be unscrewed into two separate parts. The two sections are connected by a standard 2" filter thread (M48x0.75). So the lower nosepiece can be used as a 2" 34.8mm spacer ring, and the upper eyepiece holder can be used as an M48 visual back by itself.