


Rack and Pinion Focuser 1.5-inch Extension Tube
The Explore Scientific Rack and Pinion Focuser 1.5-inch Extension Tube adds 1.5 inches to the 2-inch Rack and Pinion focusers on Explore Scientific ED APO telescopes. Extension tubes are used when an eyepiece, camera or other accessory reaches focus beyond the focuser's travel, by moving the accessory farther out from the telescope.
A half-inch version (ESRPEXT1) is also available for setups that need less extension.
- Item number: ESRPEXT2
- Adds: 1.5 inches
- Fits: 2-inch Rack and Pinion focusers on Explore Scientific ED APO telescopes
Explore Scientific Rack and Pinion Focuser Extension Tube adds 1.5 inches to the 2-inch Rack and Pinion focusers on our ED APO telescopes.














