The GSO 200 mm f/4 Parabolic Primary Mirror is designed for Newtonian telescopes and DIY telescope projects. It collects and focuses incoming light to form an image at the focal plane. The mirror is made of quartz glass and features an enhanced aluminum coating with approximately 93% reflectivity, protected by a durable SiO2 layer.

Key features

• aperture: 200 mm (8")
• focal length: 800 mm
• focal ratio: f/4
• parabolic surface for Newtonian telescopes
• material: quartz glass
• enhanced aluminum coating (~93% reflectivity)
• protective SiO2 overcoat
• suitable for telescope building and upgrades

Included in the box

• GSO 200 mm f/4 primary mirror

Technical specifications

• SKU: AD010
• aperture: 200 mm (8")
• focal length: 800 mm
• focal ratio: f/4
• thickness: 25 mm
• material: quartz
• shape: parabolic
• reflectivity: ~93%