This Erect Image Diagonal allows the image to be right side up and left right corrected in most telescopes. This diagonal is a great tool for those who wish to use their telescopes for land viewing of distant objects or wildlife. The Erect Image Diagonal is also very useful when viewing the Moon to be able to correctly identify features in relation to a Lunar map. Light Pass: 88mm.
Note: Newtonian reflectors can not be corrected.