Back Focus Extension Tube For Astronomical Telescope With M48x075 Thread Aluminum Spacer To Help SLR Cameras Reach Focus For Astrophotography And Lunar Shots Works With Telescopes Guide Scopes And MPCC Correctors 3mm To 50mm Length Options

M48 Thread Extension Tube for Telescope Astrophotography Focus
✔️ Single aluminum tube M48x0.75 thread 3mm to 50mm length options

This aluminum spacer tube adjusts the distance between telescope and SLR camera to achieve proper focus during astrophotography sessions with guide scopes or correctors.

✅ Fits standard M48x0.75 threads on many astro imaging adapters
✅ Lightweight anodized aluminum build adds minimal weight
✅ Available in one tube per pack from 3mm up to 50mm
✅ Helps reach focus for planetary lunar and deep sky shots

💡 What is a back focus extension tube used for? These handy tubes solve common focus problems when pairing cameras with telescopes. - They increase the optical path length so the camera sensor sits at the correct focal point - Users often need them with reducers correctors or guide scopes to hit the right back focus distance - Choosing the proper length avoids blurry images and keeps the whole setup compact and balanced

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