The mirror on Hubble had to be so smooth that it was the equivalent of the surface of the earth having no bumps more than 6 inches high ---> smooth to 1/800,000 of an inch.
http://hubblesite.org/the_telescope/..._bolts/optics/
The mirror on Hubble had to be so smooth that it was the equivalent of the surface of the earth having no bumps more than 6 inches high ---> smooth to 1/800,000 of an inch.
http://hubblesite.org/the_telescope/..._bolts/optics/
Regards,
Silver
"Discovery consists of seeing what everybody has seen and thinking what nobody has thought"..........Szent-Gyorgy