The SVBONY SV165 Mini 40 mm Guide Scope is a compact, lightweight guiding solution designed for deep-sky astrophotography. With a fast focal ratio and precision mechanical construction, it delivers bright guide stars and reliable tracking performance for long-exposure imaging.
Key Features
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Compact & Lightweight Design
Ideal for portable and lightweight imaging rigs, minimising additional load on the mount. -
40 mm Aperture with Fast f/4 Optics
The 40 mm aperture and fast f/4 focal ratio provide bright guide stars, improving guiding accuracy. -
Fully Multi-Coated Optics
Multi-coated glass elements enhance light transmission and contrast for reliable star detection. -
Precision Six-Point Adjustment System
Allows accurate alignment of the guide scope with the main telescope, maintaining consistent guiding. -
Robust Aluminium Construction
Machined aluminium body offers rigidity and durability while remaining lightweight.
Designed for Astrophotography Guiding
The SV165 is optimised for use with small guide cameras, providing a stable reference star for accurate autoguiding. Its compact size makes it especially suitable for refractors and travel-friendly imaging setups.
Optical & Mechanical Performance
With a focal length of approximately 160 mm, the SV165 strikes a balance between sensitivity and field coverage, making it effective for guiding across a wide range of focal lengths.
Six-Point Alignment & Secure Focusing
The adjustable six-point ring system allows precise centring of the guide scope. A smooth helical focuser with scale markings makes it easy to achieve and repeat accurate focus.
Extension Tubes & Camera Compatibility
Supplied extension tubes allow flexible camera positioning to achieve correct focus with a wide range of guide cameras. The brass compression ring and nylon-tipped screws protect camera barrels while maintaining secure attachment.
Typical Use Cases
- Autoguiding for deep-sky astrophotography
- Lightweight refractor imaging setups
- Portable and travel-friendly mounts
- Can also be used visually as a basic finder scope
Key Specifications
- Aperture: 40 mm
- Focal ratio: f/4
- Approx. focal length: 160 mm
- Construction: Aluminium body
- Optics: Fully multi-coated
Package Contents
- SV165 guide scope optical tube
- Guide scope rings with six-point adjustment
- Mounting base
- Extension tube set
- Fixings and tools
- User manual
- Dust caps
Compatibility Notes
- Compatible with most small guide cameras
- Designed for astrophotography guiding
- Lightweight design suitable for modest mounts
