Quote:
Originally Posted by Satchmo
Thats nice advertising about what Ion milling is capable of in a research situation .
Have a look at the link on that page showing final ion milled results of an RC 24" - P-V is 1/10 wave - this would probably have been around 1/4 wave if only rotational symmetric polishing had been carried out ( easy enough to do with pitch polishing )
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Actually here:
http://www.rcopticalsystems.com/tele...ogram_JN07.pdf
it says:
RMS = 0.024 ( = 1/42 wave )
Peak to valley = 0.1 wave
Remembering that the reflected wave is only half that value.
Still - I think it's a pity that RCOS went out of business.
Maybe ion milled optic telescopes will become collectors items?