SVBONY M42×0.75 (T2) Extension Tube Kit is a modular spacing solution for astrophotography imaging trains. Supplied with 5 mm, 10 mm, 15 mm, and 20 mm extension rings, it allows precise back-focus adjustment when using cameras, reducers, and field flatteners.

Key Features

• Precision M42×0.75 (T2) threading
  Each extension tube features male and female M42×0.75 threads, providing accurate and secure connections between compatible astrophotography accessories.
• T2 system compatibility
  Designed for standard T2 imaging systems, helping resolve common spacing and focusing issues in camera-based setups.
• Accurate image scale control
  Enables precise spacing for reducers and field flatteners, helping achieve correct image scale and sharp focus.
• Flexible modular spacing
  Extension tubes can be used individually or combined to achieve the exact spacing required for your optical configuration.
• All-metal anodised construction
  Fully metal design with anodised aluminium finish ensures durability, rigidity, and resistance to deformation during long-term use.

Extension Tube Kit Contents

The SVBONY M42 extension kit includes four individual tubes:

• 5 mm extension tube
• 10 mm extension tube
• 15 mm extension tube
• 20 mm extension tube

Modular Combination Design

By combining different tube lengths, the required spacing can be achieved with high precision. This flexibility makes the kit ideal for fine-tuning back focus in astrophotography imaging trains.

M42×0.75 Thread Compatibility

The male and female M42×0.75 threads allow direct connection to T2 camera adapters, filter holders, and other M42-threaded astrophotography accessories.

Durable All-Metal Design

The anodised aluminium construction provides strength and stability while remaining lightweight, ensuring reliable performance without adding unnecessary load to the imaging train.