Honestly, I'd forgotten how a Schmidt telescope works. But this is a pretty cool idea for a microscope: https://www.science.org/content/article/inspired-sea-and-sky-biologist-invents-new-kind-microscope
https://www.nature.com/articles/s41587-023-01717-8
The trick: the thing being observed is in the same fluid that's also touching the mirror & the correction plate.
I had to stare at some of the diagrams in the Nature article for a minute until I got it. But those diagrams are pretty cool too. #optics #science #biology #telescope #microscope #biomedicalEngineering #fluorescenceImaging