Optical Emgineer reporting in.
This is bullshite.
Read for yourselves:
https://www.quora.com/Can-we-use-a-microscope-as-a-telescope-by-just-inverting-it
What you can learn today is, that if you use a microscope “the other way around”, something big is imaged into somethjng small on the focal plane.
Zeiss, a company that manufactures a shitton of optical stuff, has a very successful semi-conductor branch. That branch started off when some engineers from the microscope-department fiddled around with " inverted" microscopes during their lunchtime to create the first optics for lithography from Zeiss.
Source: i worked there. I know those engineers.
I shall remember this comparison and use it at the most inappropriate situation. Thank you.