What is "Research Grade Optic" ?Posted By Jesper Sorensen |
Orion Optics UK calls one of their lines of Newtonian optics "Research Grade". In their case it means 1/8 PV wavefront and a Zygo test certificate of the main mirror.
But anyone could call anything research grade.
Best
Jesper
But anyone could call anything research grade.
Best
Jesper
