Astronomical telescope star guide system connection accessories, six point star guide rings (two for one pair)

80mm guide star ring: thickness: 6mm guide star mirror maximum diameter: 70mm guide star mirror minimum diameter: 35mm
Material: Aluminum alloy

90mm guide star ring: thickness: 8mm guide star mirror maximum diameter: 80mm guide star mirror minimum diameter: 45mm
Material: Aluminum alloy

102mm guide star ring: thickness: 8mm guide star mirror maximum diameter: 95mm guide star mirror minimum diameter: 55mm
Material: Aluminum alloy

127mm guide star ring: thickness: 8mm guide star mirror maximum diameter: 115mm guide star mirror minimum diameter: 65mm
Material: Aluminum alloy

152mm guide star ring: thickness: 8mm guide star mirror maximum diameter: 145mm guide star mirror minimum diameter: 85mm
Material: Aluminum alloy