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Newtonian mirror D=114mm F=7.9 Caliber D 114mm Focal length F 900mm Edge thickness 14mm Surface accuracy into /6 | Coating Aluminum plating plus protective film The primary mirror is a spherical surface, and the secondary mirror is an elliptical plane
Newtonian mirror D=114mm F=7.9 Caliber D 114mm Focal length F 900mm Edge thickness 14mm Surface accuracy into /6 | Coating Aluminum plating plus protective film The primary mirror is a spherical surface, and the secondary mirror is an elliptical plane