Meade Erect Image Prisms

The Meade #932 45-degree, 1.25-inch erecting prism is all you need to set up your ETX 90/105/125 telescope for terrestrial viewing! All ETX telescopes include an internal, flat mirror to reflect light to the telescope's 90-degree astronomical observing position; in this position the telescope's image is right side up, but reversed. For terrestrial observing, the #932 45-degree erecting prism reorients the image to produce a natural view. In addition, it provides convenient, 45-degree observing angle.

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 Meade Erect Image Diagonal Prism 07217 is desirable. Meade #928 45° Erect-Image Diagonal Prism (1.25") 07217 accomplishes this image correction and places the eyepiece at a convenient 45° viewing angle.

#928 Meade Erect-Image Diagonal Prism is designed to use 1.25" eyepieces in catadioptric telescopes with a 1.25" visual back or in refractors with a 1.25" focuser drawtube. Meade Image Erecting Diagonal 07217 can be used with older 12", 14", and 16" Meade SCTs by adding a 1.25" eyepiece holder #9135. (These scopes normally came with a thread-on 2" star diagonal that cannot accommodate the image erector.) Meade 1.25" Erecting Prism #928 is fully coated for high light transmission.