1. M48 Thread Design: Astronomical telescope extension tube M48x0.75, outer diameter 2 inches, ensures compatibility with most telescopes, cameras, and astronomical devices, making it easy to adapt for daily observation or astronomy photography.
2. Anti ​ Treating: The internal threads feature anti ​ treating to reduce optical reflections and interference, ensuring clearer and brighter images. Particularly suitable for astronomy photography, avoiding unnecessary light reflections.
3. Accurate Focusing Adjustment: Achieve the correct image scale with this extension tube, meeting the accurate spacing required for reducer lenses and field flatteners, solving ​ length and spacing issues in astronomy photography. By combining extension tubes of different lengths, you can adjust the spacing between the telescope and camera for improved filming results.
4. Suitable for All Users: The installation and removal of the extension tube are very simple, suitable for both beginners and professionals. Whether you are an astronomy enthusiast or a professional astronomy photographer, you can easily operate, quickly connect to the telescope frame, and make accurate observations.
5. Aluminum Alloy Material: The extension tube boasts an all metal structure with an anodized aluminum process. This construction ensures long lasting performance even in rigorous astronomical imaging conditions.

Spec:
Item Type: M48 Astronomical Telescope Extension Tube
Material: Aluminum Alloy
Matte Treated: Equipped with Matte Threads Inside
Inner Thread Specification: M48x0.75mm
Outer Thread Specification: M48x0.75mm
Outer Thread Depth: 4mm / 0.2in
Outer Diameter: 50.8mm / 2.0in
Flange Distance: 30mm /1.18in
Total Length: 34mm / 1.34in

How to Use:
Plug and play

PackageList:
1 x M48 Astronomical Telescope Extension Tube

Note: