Astronomical Extension Tube, 8Pcs M48 Focal Length Extension Tube Kit, Astronomical Ring for Telescope, Cameras, Eyepieces, Length 3mm, 5mm, 7mm, 10mm, 12mm, 15mm, 20mm and 30mm
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- Aluminum Alloy Material All metal structure and anodized aluminum process, durable, using this extension tube can obtain the correct image scale or the precise spacing required by the reducer or field flattener.
- Focusing Problem Elimination The extension tube has M48 female thread and M48 male thread, which is used to solve the spacing problem in astrophotography and eliminate a series of focusing problems.
- Eliminate Redundant Light The design of female thread can eliminate stray light and reflected light, making the image clearer and more perfect.
- Type Astronomic telescope M48 threaded extension tube, the height of the extension tube is 3mm, 5mm, 7mm, 10mm, 12mm, 15mm, 20mm and 30mm.
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