Custom eyepiece builders

[wichitaguns]

Hey guys.anyone know of an cottage companies who build custom "standard " eyepieces for telescopes or spotting scopes.
I have a pentax and I love the optical quality but it would be soo much more useful if I had a reticle

 

[308pirate]

Hey guys.anyone know of an cottage companies who build custom "standard " eyepieces for telescopes or spotting scopes.
I have a pentax and I love the optical quality but it would be soo much more useful if I had a reticle

I wish.........I'm in the same boat with a Kowa spotter and eyepiece.

 

[wichitaguns]

I considered buying a fixed mag eyepiece and inserting a lens with a reticle (eo optics) . But I dont know how the optical equations would work out