Sky-Watcher 1.25″ Erect Image Diagonals
Most of the telescopes work perfectly well during daytime as well as for astronomy. If you have a refractor or a Schmidt-Cassegrain telescope and you want to use it for terrestrial observations, Sky-Watcher Erect Image Diagonals are the most useful accessory you can buy.
Normally, image created through telescopes may be either upside down, flipped so that you see a mirror image, or a combination of the two. It will be very confusing when you are trying to track a moving boat or flying bird. This problem can be corrected easily by using a erect image diagonal
Simply remove the standard diagonal from the telescope’s focuser or visual back, and install the Sky-Watcher Erect Image Diagonal, then when you insert an eyepiece, objects will be right side up and left-to-right correct. These Amici prism diagonals are very comfortable for daytime observations, where the telescope is often in a horizontal position.