【Aluminum alloy extension tube – extends focusing distance to solve back‑focus issues, enabling sharper astrophotography by eliminating frustrating focus limitations】
This tube effectively increases the distance between your lens and camera sensor, allowing you to achieve precise focus with telescopes and cameras that require additional back‑focus. It directly addresses the common pain point of being unable to reach infinity focus or struggling with vignetting, making it an essential accessory for astrophotographers who demand , detailed images of celestial objects.
【Lightweight aluminum alloy construction – , corrosion‑resistant, and built for long‑term use – adding minimal weight to your optical setup without compromising stability】
Crafted from high‑quality aluminum alloy, this tube offers excellent strength‑to‑weight ratio, reliable performance without burdening your equipment. The robust material resists wear and exposure, providing a stable, non‑reactive extension that maintains precise alignment – a dependable choice for both field and observatory use.
【Standard M48×0.75 thread – compatible with a wide range of cameras, telescopes, and lenses – suitable for adult astrophotographers, hobbyists, and professional astronomers who need a extension solution】
The industry‑standard M48 thread allows this tube to integrate seamlessly with many optical systems, offering flexibility for various setups. This broad compatibility makes it ideal for adult astrophotography enthusiasts, deep‑sky imagers, and planetary observers who frequently switch between different equipment .
【Internal anti‑glare treatment – anodized finish with matte threads reduces internal reflections and stray light – also useful for photography, microscope adapters, or any application requiring controlled light paths】
Description
Features:
* Extension Tube is made of aluminum alloy, durability and light weight
* Extension Tube is anodized and has internal matte thread treatment to reduce the probability of glare
* Application: Used for connecting various cameras to astronomical telescopes, lenses, MPCCs, guide mirrors and other equipment to solve the problem of not being able to focus due to insufficient back intercept,
and extend the distance from the lens to the camera.
* The thread diameter of this extension tube is M48 (48mm)
* Before purchasing, please check our size table to make that the size and thread are correct
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