T2 Extension Tube M42x0.75 for SLR Camera & Telescope
T2 Extension Tube M42x0.75 for SLR Camera & Telescope
T2 Extension Tube – M42x0.75 Thread | SLR Camera & Astrophotography
Achieve precise image spacing and perfect focus with this premium aluminum T2 Extension Tube. Whether you're dialing in the correct image scale for astrophotography or fine-tuning spacing for reducers and field flatteners, this compact tube is an essential addition to your optical setup.
Why You'll Love It
- Full Metal Construction: Machined from aluminum with an anodized finish for lasting durability and a lightweight, professional feel.
- Universal T2 Threading: Features M42x0.75mm male and female threads on both ends — compatible with a wide range of SLR cameras and astronomical telescopes.
- Multiple Length Options: Available in 8 sizes — 3mm, 5mm, 7mm, 10mm, 12mm, 15mm, 20mm, and 30mm — so you can select the exact spacing you need.
- Astrophotography Ready: Specifically designed to resolve spacing and focusing challenges in telescope imaging setups, including use with reducers and field flatteners.
- Easy to Install: Simply thread onto your existing T2-compatible mount — no tools required.
Specifications
- Type: Astronomical T2 Thread Extension Tube
- Material: Aluminum (anodized)
- Male Thread: M42 x 0.75mm
- Female Thread: M42 x 0.75mm
- Thread Caliber: 42mm (M42) — Note: This is NOT M48 thread caliber. Please verify before purchasing.
- Available Lengths: 3mm / 5mm / 7mm / 10mm / 12mm / 15mm / 20mm / 30mm
- Color: Black
- Country of Origin: Made in China
Package Includes
- 1 × T2 Extension Tube (length of your choice)
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Frequently Asked Questions
Q: What thread size does this T2 extension tube use?
A: This extension tube uses an M42 x 0.75mm thread (T2 standard) on both the male and female ends. It is 42mm in caliber — please note it is not compatible with M48 thread systems. Always verify your existing mount's thread size before ordering.
Q: Which camera or telescope mounts is this extension tube compatible with?
A: This tube is compatible with any T2-threaded SLR camera adapter or telescope focuser that uses the standard M42 x 0.75mm T2 thread. It works with a wide variety of astronomical telescopes and camera adapters using the T2/T-ring system.
Q: Can I stack multiple extension tubes together?
A: Yes! Because each tube has matching male and female M42 x 0.75mm threads, multiple tubes can be stacked together to achieve your desired total spacing length. Choose from 3mm up to 30mm individual lengths for maximum flexibility.
Q: What is the tube made of, and is it durable?
A: The tube is precision-machined from aluminum and finished with an anodizing process, making it resistant to wear, corrosion, and everyday handling — built to last through many astrophotography sessions.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.