SVBONY SV158 2″ Extension Tube is designed to increase the optical path length in telescope systems where additional back focus is required. Available in 75 mm and 90 mm lengths, it provides a robust and reliable solution for achieving accurate focus in visual observing and astrophotography setups.
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 2″ compatibility
Designed for use with standard 2-inch telescope focusers, eyepieces, and camera adapters. -
Suitable for astrophotography
Provides stable spacing for cameras and imaging accessories in basic and intermediate astrophotography configurations. -
Lightweight and portable
Adds minimal weight while maintaining mechanical strength, making it suitable for travel and field use.
Available Length Options
- 75 mm extension tube
- 90 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.
Design & Dimensions
Typical Use
The SV158 extension tube is commonly used with refractor and reflector telescopes where additional back focus is required. It is suitable for visual observing and for use with compatible camera adapters in astrophotography setups.
