BM-CF35060 Aperture 60mm Focal length 350mm Blue coating optical K9mm K25mm eyepiece High quality as
BM-CF40080 Aperture 80mm Focal length 400mm Blue coating optical K9mm K25mm eyepiece High quality as
BM-CF50090 Aperture 60mm Focal length 500mm Blue coating optical K9mm K25mm 1.25