The GSO 46 mm Elliptical Secondary Mirror is an optical component designed for Newtonian telescopes. It reflects light from the primary mirror toward the focuser while maintaining image quality and minimizing light loss. The mirror is made of BK7 optical glass and features an enhanced aluminum coating with approximately 93% reflectivity, protected by a durable SiO2 layer.

Key features

• minor axis 46 mm
• elliptical flat surface for Newtonian telescopes
• material: BK7 optical glass
• enhanced aluminum coating (~93% reflectivity)
• protective SiO2 overcoat
• precise optical surface for accurate light reflection

Included in the box

• GSO 46 mm secondary mirror

Technical specifications

• SKU: AD064 / AD046
• minor axis: 46 mm
• thickness: 10 mm
• material: BK7
• shape: elliptical (flat)
• reflectivity: ~93%