SVBONY SV157 1.25″ Extension Tube is designed to increase the optical path length in telescope setups where additional back focus is required. Available in 56 mm and 70 mm lengths, it provides a simple and reliable solution for achieving accurate focus in visual observing and basic imaging configurations.
Key Features
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Extended focusing range
Adds fixed optical length to help achieve focus when the focuser travel alone is insufficient. -
Precision-machined aluminium construction
CNC-machined aluminium body ensures rigidity, durability, and accurate alignment. -
Standard 1.25″ compatibility
Designed for use with standard 1.25-inch telescope focusers, eyepieces, and camera adapters. -
Improved focusing precision
Helps fine-tune focus for visual observing and basic astrophotography applications. -
Lightweight and portable
Compact design adds minimal weight, making it suitable for travel and grab-and-go setups.
Available Length Options
- 56 mm extension tube
- 70 mm extension tube
Both versions share the same internal diameter, build quality, and compatibility. Please select the required length based on your telescope’s focusing requirements.
Typical Use
The SV157 extension tube is commonly used with refractor telescopes and visual setups where additional back focus is needed. It can also be used with compatible camera adapters for simple imaging applications.
