Review on 🔎 Science Education: Ajax Scientific Concave Mirror - Enhance Learning with Larger Diameter by Dang Esq

The mirror is severely astigmatic. The focal length differs in two axes by 5-6mm! Makes this mirror almost useless for real scientific purposes. It can be used for simple demos that don't require sharp focus. Forget about having to do anything with a knife blade or spatial filter. as i need. You get what you apparently pay for.