D114F900 Newton reflection objective primary lens secondary lens focusing seat eyepiece secondary lens seat astronomical telescope DIY
D114F900 main mirror:
114mm caliber, 900mm focal length, main mirror of spherical reflecting telescope, thickness of about 14mm, surface aluminum film and protective film.
With 25mm minor axis (short side diameter) secondary mirror
D150F750:
D114F900 main mirror+35mm second mirror

Size : D114F900
Flatness : Lambda/4
Angle Tolerance : 3 Minute
Dimension Tolerance : +-0.5mm
Material : K9
Model Number : D114F900+25fujing
Shape : circle
Surface Quality : 40/20