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Unfortunately LOMO 1.25" Star Diagonal Prism is no longer carried by OpticsPlanet.
You can also explore other items in the Telescope Accessories category yourself to try and find the perfect replacement for you!
Our 1.25" Star Diagonal Prism lets you view objects that are at a 90° angle from the direction the telescope is pointing, and it allows convenient and comfortable viewing when the telescope is pointed at, or near the zenith (i.e. directly overhead). The resulting image is right side up, but will be reversed from left to right.