TS-Optics 74mm elliptical secondary mirror for Newtonian telescopes

The secondary is meant for self-construction and for improving of Newtonian telescopes. The mirror is coated with a 94% aluminium reflection layer. This is protected by a quartz protection layer. Thus the secondary mirror becomes robust and non-ageing.

Technical Data

Diameter minor axis: 74 mm

Thickness: 12 mm

Reflectivity: 94%