76mm Primary Mirror Secondary Mirror Set 76F300 76F360 76F700 76F900 Spherical Reflector Lens for Newtonian Reflection Telescope

Specifications:

D76F300 Set

Spherical primary mirror

Material: K9 Optical glass

Diameter: 78mm

Focal length: 300mm

Thickness: About 11mm (thickness may vary slightly depending on the manufacturer's batch, please do not buy if you mind)

Coating: Aluminum coating and protective film

Secondary mirror: Minor axis (short side diameter) 20mm

D76F360 Set

Spherical primary mirror

Material: K9 Optical glass

Diameter: 78mm

Focal length: 360mm

Thickness: About 11mm (thickness may vary slightly depending on the manufacturer's batch, please do not buy if you mind)

Coating: Aluminum coating and protective film

Secondary mirror: Minor axis (short side diameter) 20mm

D76F700 Set

Spherical primary mirror

Material: K9 Optical glass

Diameter: 78mm

Focal length: 700mm

Thickness: About 11mm (thickness may vary slightly depending on the manufacturer's batch, please do not buy if you mind)

Coating: Aluminum coating and protective film

Secondary mirror: Minor axis (short side diameter) 20mm

D76F900 Set

Spherical primary mirror

Material: K9 Optical glass

Diameter: 78mm

Focal length: 900mm

Thickness: About 11mm (thickness may vary slightly depending on the manufacturer's batch, please do not buy if you mind)

Coating: Aluminum coating and protective film

Secondary mirror: Minor axis (short side diameter) 20mm

Package:

Primary mirror * 1

Secondary mirror * 1