Parabolic mirror without secondary mirror All spherical surfaces have secondary mirrors and detailed parameters D114F900 sphere Mirror for Newtonian Reflector Astronomical Telescope Primary mirror: sphere Caliber: 114mm Focal length: 900mm The thickness is about 14mm Surface accuracy 1/6 Reflectance at: 92%/400-950nm Major axis of secondary mirror: 35mm Minor mirror minor axis: 25mm CoatingEnhanced aluminum and protective coating Package description: 1x D114F900 mirror 1x 25mm Secondary mirror 1 xpacking box D114F450 parabolic Mirror for Newtonian Reflector Astronomical Telescope Primary mirror: parabolic Caliber: 114mm Focal length: 450mm The thickness is about 14mm Surface accuracy 1/10 Reflectance at: 92% / 400-950nm CoatingEnhanced aluminum and protective coating Package description: 1 D114F450 mirror 1 packing box D150F750 sphere Mirror for Newtonian Reflector Astronomical Telescope Primary mirror:sphere Caliber: 150mm Focal length: 750mm The thickness is about 18mm Surface accuracy 1/6 Reflectance at: 92% / 400-950nm Major axis of secondary mirror: 50mm Minor mirror minor axis: 35mm Net weight810g CoatingEnhanced aluminum and protective coating Package description: 1x D150F750 mirror 1x 35mm Secondary mirror 1 xpacking box D150F750 parabolic Mirror for Newtonian Reflector Astronomical Telescope Primary mirror:parabolic Caliber: 153mm Focal length: 750mm The thickness is about 18mm Surface accuracy 1/10 Reflectance at: 92% / 400-950nm CoatingEnhanced aluminum and protective coating Package description: 1 D150F750 mirror 1 packing box D160F1300 sphere Mirror for Newtonian Reflector Astronomical Telescope Primary mirror: sphere Caliber: 160mm Focal length: 1300mm The thickness is about 18mm Surface accuracy 1/6 Reflectance at: 92% / 400-950nm Major axis of secondary mirror: 50mm Minor mirror minor axis: 35mm Net weight1560g CoatingEnhanced aluminum and protective coating Package description: 1x D160F1300 mirror 1x 35mm Secondary mirror 1 xpacking box D203F1600 sphere Mirror for Newtonian Reflector Astronomical Telescope Primary mirror: sphere Caliber: 203mm Focal length: 1600mm The thickness is about 18mm Surface accuracy 1/10 Reflectance at: 92% / 400-950nm Major axis of secondary mirror: 56.5mm Minor mirror minor axis: 40mm Net weight1550g CoatingEnhanced aluminum and protective coating Package description: 1x D203F1600 mirror 1x 40mm Secondary mirror 1 xpacking box ABOUT