A Multiplied Crayford for Newton
This model is intended to replace the Crayford equipped with a single focusing speed on the Newton Sky-Watcher tubes. This Crayford Dual-Speed focuser provides fine focusing with the 1:10 gear ratio. A very appreciable plus during observations at high magnifications and in imaging. It allows to support heavy loads (APN). A clamping screw located at the bottom of the focuser maintains focus according to the orientation of the optical tube.
A 31.75mm adapter is supplied as standard to use eyepieces of the same format from the 50.8mm output. The 31.75mm slider of the adapter can be unscrewed to attach a T2 ring. The 50.8mm outlet can also be unscrewed from the tube to be replaced by an accessory with M54x1 female thread. A 50.8mm extension tube is also delivered.
This focuser is also suitable for DIY telescope projects.
Hole spacing: 85 x 85mm. Stroke length: 115mm.
CAUTION: Does not work for Newton f/4TTENTION
Features
- Focus gear down 1:10
- Stroke length: 115mm
- Adaptation 31.75mm, 50.8mm, T2 and M54x1 female
