Minor axis: refers to the length of the short side diameter
The 25mm minor axis sub-mirror, the short side length is 25mm, the surface is coated with aluminized film and protective film, suitable for use with the 114mm caliber reflective primary mirror.
35mm minor axis secondary mirror, short side length 35mm, surface aluminized film and protective film, suitable for use with 127mm, 133mm, 135mm, 150mm, aperture reflective primary mirror.
Please purchase other models according to your needs!!!!