1. Standard M48x0.75mm Threads: Features standard M48x0.75mm internal and external threads with a 2 inch diameter, ensuring compatibility with most telescopes, cameras, and astronomical equipment. Ideal for daily observation and astronomical photography.
2. Internal Anti Reflection Thread: The internal thread is treated with a matte black finish to minimize optical reflection and interference, resulting in clearer and brighter images by eliminating unwanted light reflections during filming.
3. Precise Image Scaling And Spacing Adjustment: Enables accurate image scaling and meets the precise spacing requirements of reducers and field flatteners, effectively addressing ​ length and back focus challenges in astronomical photography. By combining extension tubes of different lengths, users can finely adjust the distance between the telescope and camera to enhance imaging performance.
4. Full Metal Construction: Made of premium metal and finished with anodized aluminum coating, ensuring dependable performance even in harsh environments. Designed for long term stability and efficiency.
5. Easy Installation And Removal: Simple to install and remove, making this ​ length extension tube suitable for both beginners and professionals. It quickly attaches to telescope setups for precise observation and photography.

Specification:
Item Type: Telescope Extension Tube
Material: Aluminum Alloy
Light Block Treatment: Internal with Anti Reflection Thread
Inner Thread: M48x0.75mm
Outer Thread: M48x0.75mm
Outer Diameter: Approx. 50.8mm / 2 in
​ Length: 15mm / 0.6in

How to Use:
Install and use

Package List:
1 x Telescope Extension Tube