🔎 Science Education: Ajax Scientific Concave Mirror - Enhance Learning with Larger Diameter Review

Through trial and error, I found that this mirror produces a distorted image that cannot be used for scientific experiments.

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.

Not at all what I expected. I realize I should do more research before purchasing, but I also think the description of what the mirror actually does is very lacking. A better description would save me the hassle of getting the wrong thing. I thought I could mount this on a cabinet in my office to reflect the doorway as I sit with my back to the door most of the time typing. This is definitely NOT the right mirror for this situation.