Meade #928 45 deg. Erect-Image Diagonal Prism, 1.25" Mount.

Diagonal mirrors and prisms result in images that are correctly oriented up-and-down but reversed left-for-right. For terrestrial observing a fully correctly oriented telescopic image is desirable; the #928 Diagonal Prism accomplishes this image correction and places the eyepiece at a convenient 45° viewing angle. Use the #928 with the 1.25" Eyepiece-Holder.