17 Dec
2003
17 Dec
'03
11:17 p.m.
Mirrors could be sectional. Many mirrors can be joined together into a much larger mirror. Take a look at those put it together yourself model kits.
Remember that when they're joined, they must maintain an accuracy of a small fraction of a wavelength to not spoil the results. I'm not saying this is impossible, only very, very difficult. Even for (especially for?) a well-funded black project. Phil