Reticles

The precision custom reticle is generally installed on the focal plane of the right eyepiece of the telescope. It is a thin glass with reticle dense lines engraved on the surface of the pole book. In theory, this thin optical reticle glass also participates in imaging and extends the focal length of the objective lens, which will have more or less influence on the length of the right eyepiece.

Ecoptik (also known as BRD Optical) is one of the few companies producing custom glass reticles because the precision reticles require extremely high cleanliness. Any tiny dust will produce large black spots during observation. At the same time, the accuracy of the installation position of the custom reticle is extremely high. Therefore, try not to disassemble it. If it is disassembled, it must be as it is recovery.