MUSE - the Multi-unit spectroscopic explorer - is attached to the VLT in Chile.
It is one of the most sophisticated instruments to be ever attached to a telescope.
Recently it has help make some remarkable discoveries :-
http://www.iceinspace.com.au/forum/s...d.php?t=163034
This 33 minute video tells the story of its creation by a team of engineers, machinists,
technicians, opticians and scientists :-
https://youtu.be/G02FTI8aIEE