The Meade Model 933 Image Erecting Prism for ETX-60, ETX-70 and ETX-80 Models 07220 has been designed to produce a correctly oriented image and convenient 45° observing angle for terrestrial observations. A great item for a home with a view or nature watching. All ETX-60, ETX-70 and ETX-80 models all feature an internal flip mirror to reflect light to the telescope's convenient 90° astronomical observing position. In this position the telescope's image is upright, but mirror reversed left to right. While this is normal and poses no problem for astronomy, for terrestrial observing a corrected image is highly desirable which is where this useful accessory comes in. For observing wildlife, a home with a view, or other Earthly applications the Meade 45° Erecting Prism results in an image both right side up and corrected left to right. The Meade 933 Image Erecting Prism for Telescopes also provides a comfortable 45° observing angle which is more convenient for daytime work.
Note: not compatible with ETX-90 or ETX-125