Secondary Mirror of a Newton Telescope
Type: elliptical plane mirror
Dimensional tolerance: ± 0.5 mm.
Surface accuracy PV: 1/4-1/6.
Coating: aluminium reflection + protective film.
Model Number:Dongda Newton Telescope Secondary Mirror
Material: glass.
Use: optical
Short axle: 20mm - 140mm
Longitudinal axis: 33 mm.
Thickness: 5 mm.
Surface accuracy: 1/3.
Coating: aluminised protective film.
Optical system of astronomical telescope: reflective