80Mm High-Precision Short-Axis Mirror Plane Mirror DIY Newton Reflection Astronomical Telescope

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90mm High-Precision Short Axis Secondary Mirror Elliptic Plane Refractor for DIY Newtonian Refractive Astronomical Telescope

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D203F1600 Parabolic NEWTON Reflection Mirror Reflector Primary Mirror With 50mm Secondary Mirrors For DIY ASTRONOMICAL TELESCOPE

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