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    Re: Submarine celestial through periscope
    From: David Pike
    Date: 2023 Mar 13, 17:33 -0700

    Further my last.  A picture is worth a thousand words except it’s hard to draw, because to get a cut you have to draw one cone over the other.  However, the diagram shows that the cones are on the inside of the Earth as Frank says. DaveP

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