Baader Planetarium T-2 Amici Prism Diagonal

The primary advantage of an Amici prism is that it corrects the image orientation, providing an upright and non-reversed view. This makes it essential for terrestrial observations, such as birding or spotting wildlife, where a mirror diagonal would leave the image reversed.

The T-2 system uses standardized threads on both the input and output sides, allowing you to screw the diagonal directly into other T-2 compatible components. This creates a secure, rigid connection that eliminates the wobble often found with standard push-fit eyepiece holders.

Because this is an Amici (roof) prism, you may notice a faint, thin line running through the center of the image. This is an inherent characteristic of the roof prism design and is normal, though it is usually only visible at very high magnifications or when viewing bright, out-of-focus objects.

Yes, provided you have the appropriate T-2 eyepiece holder adapter. Because the diagonal itself uses T-2 threads, you will need to attach a T-2 to 1.25-inch eyepiece holder to the output side to use standard eyepieces.

This diagonal is manufactured to Zeiss standards, featuring a solid metal body that offers significantly better durability and precision than plastic or entry-level aluminum diagonals. The multi-coated optics also ensure better light transmission and contrast, which is critical for maintaining image sharpness.