I think those are ND YAG lasers that will do the 3d engravings inside of crystal. Some of the ones I've seen are absolutely beautiful. Unfortunately our co2 lasers won't work for that.
Here is a link to some Hubble Space Telescope photos. Maybe there is something you can use there.
Edit: Sorry, those are low res photos. I'm looking for some hi res ones that would be better for engraving. Try searching for "hi res space photos".