Secondary Elliptical Mirrors
All Antares Optics secondary mirrors are manufactured to an ultra radical surface accuracy. Each piece is tested before and after the coating process.
By using Standard reference surfaces, and a 1/30 wave PV Dynaflect reference surface, our Zygo GPI interferometers can measure highly reflective coated surfaces. Giving you certifiable proof of its flatness, before and after it has been coated.
We've discovered that a mirror's surface accuracy can change after the coating process. This is why we test and certify each and every surface before and after coating to check for any change in our mirror's surface accuracy. This way, you can be assured the stated surface flatness is indeed what you're getting and paying for.