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Self-made DIY 20MM Reflector Astronomical Telescope Accessories Short Axis Secondary Mirror Elliptical Oblique Mirror Reflective
Specifications:
- Use: Astronomical telescope series
- Size: 20MM Secondary mirror
- Origin: CN(Origin)
- Model Number: Newtonian mirror
- Material: Optical glass
- Lens type: Reflective
- Diameter: 20MM
- Certification: CE
- Free shipping
- 100 days returns
- Low prices
- 5 million products