Newtonian Telescope Secondary Mirror
Type: Elliptical plane mirror
Dimensional Tolerance: ±0.5mm
PV Surface Accuracy: 1/4-1/6
Coating: reflective aluminium + protective film
Model Number: Newtonian Dongda Telescope Secondary Mirror
Material: glass.
Use : optical
Short axis: 20mm-140mm
Long axis: 33 mm
Thickness: 5 mm
Surface accuracy: 1/3
Coating: Aluminized and protective film
Astronomical telescope optical system: reflective