Description/Uses:
- Adds 1.38" (35mm) of back-focus travel to your telescope focuser *
- Fits on any telescope that uses a 2" eyepiece focuser
- 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 = 2.76" (70mm)
- Outside length of Upper 2" Barrel = Extension Provided = 1.38" (35mm)
- Inside Length of Upper 2" Barrel = 1.28" (32.5mm) *
- Length of Lower 2" Barrel = 1.38" (35mm)
- Thread Specification (Telescope End) = M48x0.75 Female
- Thread Specification (Thumbscrew) = M4 Male
- Weight = 3.6oz (102g)
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
