Adapt your celestial telescope for terrestrial views with the Meade #933 45-Degree Erecting Prism 1.25-Inch for ETX 70/80. This high-quality 45-degree prism aids viewing on land by orienting images in a correct fashion, instead of reversed left to right, as they appear without the adapter. The prism easily threads onto the telescope’s rear cell, and will accept eyepieces of any focal length.