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SV161 1.25inch Double Helical Micro Focuser for Telescope Guide Scope Metal Black

SKU: F9173B
-10% US$ 31.49
List Price: US$ 34.99

The SVBONY Helical Focuser allows for precise focusing of eyepieces or cameras. It is ideal in connection with a guide scope and a guide-camera. such as SV165 series mini guide scope. The focuser features a female T2-thread on the telescope side, while allowing the attachments of 1.25" equipment on the eyepiece / camera side. In addition, there is a male T2 thread on the camera side. During focusing, the attached accessories keep their orientation and don't rotate. The exact focus position can be fixed with a clamp screw.

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Model SV161
Inner diameter 1.25"

Draw Tube Travel

Adjustment Accuracy 0.05mm
Top Male Thread M42x0.75
Bottom Female Thread M42x0.75
Minimum Height 43mm
Longest Height 53mm

Net Weight

100g /3.53oz


  1. 1. Aerospace Aluminum Alloy Material Precision CNC Machining Technology Frosted and Anodized Housing Anti-skid brass screw

2. 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

3. The double-helical focuser for guider scope/finder scope Interface. The solution for telescopes or telephoto lenses with sluggish focusing

4. SV161 has M42x0.75 male thread on its top, it can be connected with camera adapters for Canon or Nikon, which sold separately

Package Includes

  • 1. 1.25" Double Helical Focuser w/ Female T2-Thread
  • 2. 3PCS M3 Screw

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