New Telescope mirror diagonal 1.25 inch 45 degree  erect image for terrestrial use
 
Turn any refractor or Cassegrain telescope into a high-performance daytime spotting scope with our  45 Degree Correct-Image Diagonal
High-quality prism diagonal provides a comfortable, 45 Degree viewing orientation for great daytime terrestrial views
Sporting a 27mm clear aperture, multi-coated prism, Deluxe 45 Degree Correct-Image Diagonal provides sharp views
3 arc second tolerance prism is 35% larger than prisms used in other models