K005 Double Spiral Focusing Seat External T-mount Ring for Telescope

Astronomical Telescope Accessories Double Spiral Focusing Seat External T-mount Ring

This is an excellent 1.25-inch double-threaded focuser with a 10mm adjustment stroke. It is light and compact, made of all metal, and durable. During the focusing process, the CDD eyepiece or zenith mirror inserted does not rotate and only makes linear movements, which is conducive to observation and astronomical photography. The meticulous craftsmanship makes its micro-focusing extremely precise and smooth even at huge magnifications.

Parameters

1. New double-helix fine-tuning focuser
2. High-precision double-helix focuser for guide mirror/viewfinder mirror interface
3. Solution for telescopes or telephoto lenses that focus slowly
4. The item is made of all metal, sturdy and durable
5. Accuracy: 0.1mm
6. Interface: 1.25 inches with M42 * 0.75 external thread (internal thread M42 * 0.75 needs to be noted when placing an order)
7. Main mirror interface: M42X0.75
8. Focusing stroke: 10mm
9. Minimum length: 56mm
10. Maximum: 66mm