Reticle

The precision custom optical glass 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 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.

You just need provide the drawing,then we can make the reticles for you.