Reviewed by 1 customers
Used on sv130edt refractor telescope and C9.25 sct. Provides beautiful, contrasty planetary views. Solid robust construction. Attenuates the light scatter that mirrors exhibit. Excellent at focal ratio of 7 and above by lack of false color from bright objects. Handles the wide view of the pentax XW40 eyepiece. If your scope is a focal ratio of 6 and below get the T2 version, if false color from bright objects bother you.