1.25" ETX Erecting Prism

This 45-degree viewing angle image erecting diagonal has a knurled ring that threads onto the Cassegrain focus at the rear of Meade ETX-90/105/125 scopes. It will not fit the Meade ETX-60/70AT scopes, but will fit the 90mm and 100mm Astronomica Maksutovs we sell. A metal thumbscrew holds eyepieces firmly in place. It is fully coated for high light transmission. The use of this prism will result in a fully correctly oriented image and a convenient 45° observing angle and is recommended for terrestrial viewing or any other applications where correctly oriented images are important to the observer.