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Re: f/d ratio on dish



Hello This is Yoshi.

At 2001/07/30 07:22:50 Bill Magnusson wrote:
> The focal length of a (normal prime focus) dish
> can be calculated from the diameter and depth of the dish surface.
> 
> f (focal length) = D squared divided by 16 times C
> or D x D / 16 x C
> where D is the diameter of the dish surface and C is the depth.

  I made a chart of this. Is this correct?

http://www.geocities.co.jp/SiliconValley/4703/temp/dish-focal.gif


Yoshihiro Imaishi JF6BCC/KH2GR
GL:PM53JV, ex KC6IY(T88IY),V63BP
mailto:jf6bcc@jarl.com
<http://plaza16.mbn.or.jp/~palau/index-hame.html>
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