Ruggero Santilli an Italian American Nuclear Physicist created a concave lens telescope.

Which was claimed to be capable of observing dark matter objects invisible to our eyes.

[link to article.sciencepublishinggroup.com (secure)]

If you research on this you'll see he was shunned for having done this because it didn't follow along with the narrative of allowed science..

Along with more that suggest yes that specific group that must not be named conspiring against him, his discoveries and instruments.. See his wiki page.

Too bad he was going to market these telescopes to everyday amateur astronomers.

There are vids and pics of his findings.

I'd definitely give this scope a try.