Newtonian Reflecting Astronomical Telescope D203 F800 Reflecting Objectives
Diameter: 203mm
Focal length: 800mm
D203 F800 reflecting objective lens group, spherical mirror, aluminized and protective film, is a good choice for DIY telescope enthusiasts.
Newtonian mirror D=203mm F=4
Caliber D 203mm
Focal length F 800mm
Side thickness 18mm
Surface accuracy λ 1/6
Coating Aluminium plus protective film
Remarks The primary mirror is a spherical surface, and the secondary mirror is an elliptical plane