Double Helical Focuser Adapter Telescope Telephoto Lenses Focusing

Description

Double Helical Focuser Adapter Telescope Telephoto Lenses Focusing
Main Feature:
1.SVBONY High Precision Double Helical Focuser.
2.Aerospace Aluminum Alloy Material Precision CNC Machining Technology Frosted and Anodized Housing Anti-skid brass screw.
3.The Focuser has a fixed orientation - so there is no rotation of mounted cameras or eyepieces - or also the field of view with your guide star - when focusing.
4.The double helical focuser for guider scope / finder scope Interface. The solution for telescopes or telephoto lenses with sluggish focusing.
Specifications:
Inner diameter: 1.25"
Stroke: 10mm
Adjustment Accuracy: 0.05mm
Top Male Thread: M42x0.75
Bottom: 2in
Minimum Height: 43mm
Longest Height: 53mm
Net Weight: 93g / 3.3oz
Package Includes:
1 X SV161 1.25" Double Helical Focuser
2" Adapter