SVBONY SVBONY SV221 90 Degree Diagonal Mirror, Telescope Diagonal 1.25 inches with Brass Compression Rings, Telescope Accessory for Refractor Telescope

Use the SV221 zenith mirror to obtain an upright image and an upside-down image. With a brass pressure ring The SV221 diagonal mirror can protect the eyepiece from being scratched and not damage the service life of the eyepiece. Large screw design Easy to use, locking eyepiece installation is easier and more stable. With filter thread The SV221 diagonal mirror has M28.5x0.6mm thread, standard thread size, you can install 1.25 inch filter. Sturdy and durable The SV221 main mirror shell is made of precision molded ABS plastic, and the lens barrels at both ends are precision machined from aluminum, which will not be easily damaged. Specifications: Size: 1.25inch Optical Design: Mirror Diagonal Inner Connection (Lens Sided): Thread M28.5x0.6 Outer Connection (Lens Sided): Barrel 1.25inch Inner Connection (Eyepiece Sided): Clamp 1.25inch Reflection Surface: Aluminum Coated Reflectivity: >92% Image Orientation: Erect Image, Mirror Inverted Optical Length: appr. 73mm Clamping System: Screw clamps Deflection Angle: 90° Clear Aperture：29.5mm Material: Plastic & metal Net Weight: 90.5g/3.19oz