A tiny Schmidt-Cassegrain telescope made of one piece of glass...

[Akira]

...seems to be in production now:

https://www.youtube.com/watch?v=OWfiQys4NMs

It all started from this interesting experiment by a YouTuber:

https://www.youtube.com/watch?v=HxwhCmO90UQ

The website of "Tiny Telescope" company:

https://www.tinytelescope.com/

[Thomas Stellwag]

thanks for sharing Akira, its an impressive video about the production

[Birna Rørslett]

Like the old Vivitar 'Solid Cat', but much much smaller.

[bobfriedman]

very interesting Akira

[Nasos Kosmas]

Very interesting Akira, thank you

[MFloyd]

Thank you Akira. Very interesting  We hope for follow up

[Akira]

Thank you all, for kind comments.  I'm glad you enjoy them.

Like the old Vivitar 'Solid Cat', but much much smaller.

Thank you, Birna, for the info.  I didn't know this lens.  Apparently, there is no glass part between the second mirror and the film plane (or sensor).  The sturdy design should suit the military use.