The SVBONY SV165 30 mm f/4 Mini Guide Scope is an ultra-compact guiding solution designed for lightweight astrophotography setups. Its small form factor and fast optics make it ideal for portable rigs, star trackers, and short-focal-length imaging systems where minimal added weight is essential.

Key Features

• Ultra-Compact 30 mm Guide Scope
  Extremely lightweight design minimises load on small mounts and star trackers while still providing reliable guiding.
• Fast f/4 Optical System
  The fast focal ratio delivers bright guide stars, improving sensitivity when paired with modern guide cameras.
• Fully Multi-Coated Optics
  Broadband multi-coated lenses improve light transmission and contrast for consistent guiding performance.
• Helical Fine Focuser
  Smooth helical focusing allows accurate focus adjustment and repeatability during imaging sessions.
• Lightweight Aluminium Construction
  Durable metal body provides rigidity while remaining suitable for travel-friendly astrophotography setups.

Designed for Lightweight Astrophotography Rigs

The 30 mm aperture and compact size make this guide scope especially well suited to wide-field refractors, camera-lens imaging, and star-tracker setups where larger guide scopes would be impractical.

Optical Performance & Focal Length

With an approximate focal length of 120 mm, the SV165 offers a wide guiding field that makes locating suitable guide stars easier, particularly when working with short-focal-length imaging systems.

Helical Focusing & Camera Compatibility

The helical focuser provides smooth, precise focus control for small guide cameras. Its simple design reduces flexure and helps maintain focus throughout long imaging sessions.

Typical Use Cases

• Star trackers and ultra-portable mounts
• Wide-field refractor astrophotography
• Camera-lens deep-sky imaging
• Secondary guide scope for lightweight setups

Key Specifications

• Aperture: 30 mm
• Focal ratio: f/4
• Approx. focal length: 120 mm
• Focusing: Helical focuser
• Optics: Fully multi-coated
• Construction: Aluminium body

Compatibility Notes

• Best suited to small guide cameras
• Optimised for lightweight imaging systems
• Not intended for visual observing as a primary telescope