SVBONY SV119 M48 Extension Tube Kit is a modular spacing solution for astrophotography imaging trains. Supplied with 5 mm, 10 mm, 15 mm, and 30 mm extension tubes, it allows precise back-focus adjustment for cameras, reducers, flatteners, and other optical accessories.

Key Features

• Solves spacing and focusing issues
  M48×0.75 male and female threads on each tube help correct common spacing problems encountered when using reducers, flatteners, or camera adapters.
• All-metal anodised construction
  Manufactured from fully anodised aluminium alloy for durability, rigidity, and long-term reliability in imaging setups.
• Modular spacing flexibility
  Tubes can be used individually or combined to achieve the exact extension length required for your optical system.
• Accurate image scale control
  Enables correct sensor spacing, helping achieve sharp focus and optimal image scale for deep-sky astrophotography.
• Internal anti-reflection threading
  Internal threading helps suppress stray light and reflections, improving contrast and image clarity.

Extension Tube Kit Contents

The SV119 kit includes four M48 extension tubes that can be combined as needed:

• 5 mm extension tube
• 10 mm extension tube
• 15 mm extension tube
• 30 mm extension tube

Modular Combination Design

Multiple extension tubes can be combined to achieve a wide range of spacing values. This makes the SV119 kit particularly useful when fine-tuning back focus for correctors, reducers, or Barlow lenses.

M48×0.75 Thread Compatibility

Each tube features standard M48×0.75 male and female threads, ensuring compatibility with a wide range of astrophotography cameras, filter drawers, and optical adapters.