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*Subject*: [amsat-bb] Re: f/d ratio on dish*From*: Yoshihiro Imaishi <imaishi@xxxxxxxxxxxx>*Date*: Tue, 31 Jul 2001 16:59:28 +0900*In-Reply-To*: <004401c1187e$a3d55e60$cc6820cb@compaq575>

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> ---- Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA. To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org

**References**:**f/d ratio on dish***From:*Gunther Meisse

**Re: f/d ratio on dish***From:*Bill Magnusson

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