SKYWATCHER 1.25″ ERECT IMAGE DIAGONALS 45° (Prism)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
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