Description/Uses:
- Adds 50mm (1.97") of back-focus travel to your telescope focuser *
- Fits standard 2" eyepiece tubes in telescopes and accessories like
diagonals
- With this, eyepieces and accessories that you may not have been able to use because your telescope tube was too short are usable again
Features:
- Precision machined from aluminum and black anodized
- 2" barrel features safety recess groove
- Threaded to accept standard 2" astronomy filters
- Features a brass compression ring so the inserted accessory will not be scratched or dented by the locking thumbscrew
Specifications:
- Total Length = 3.35" (85mm)
- Outside length of Upper 2" Barrel = Extension Provided = 1.97" (50mm)
- Inside Length of Upper 2" Barrel = 1.42" (36mm) *
- Length of Lower 2" Barrel = 1.38" (35mm)
- Thread Specification (Telescope End) = M48x0.75 Female
- Thread Specification (Thumbscrew) = M4 Male
- Weight = 4.9oz (139g)
Additional Information:
* If the inserted eyepiece does not fully slide into the upper 2" barrel, additional in-focus travel will be required by the amount the eyepiece extends out
