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Question: Pls explain lamda / 20 in radio telescope mech
lamda 20, radio telescope
Asked by YungTingShirley to Hermine on 18 Mar 2018.
answered on 18 Mar 2018:
I think you are referring to the required smoothness of a parabolic dish antenna. Thus it implies that the surface r.m.s error of a parabola typically should be less than lambda/20, which is basically the rule of thumb to make the error negible.
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Pls explain lamda / 20 in radio telescope mech
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