Celestron 1.25" Erect Image 45-Degree Diagonal - 94112-ACelestron 1. 25" Erect Image 45 Diagonal The Celestron 1. 25" Erect Image Diagonal is a great accessory for daytime terrestrial viewing with your telescope This 1. 25 diagonal produces right side up and left to right correct images when used with refractors and catadioptric (Schmidt Cassegrain) telescopes Inserts into 1. 25 focusers or visual backs; Accepts standard 1. 25 eyepieces Did you know that most telescopes work well for daytime viewing as