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    Re: Raw data for bubble
    From: Frank Reed CT
    Date: 2007 Mar 12, 01:27 EDT
    "Why does the moon decrease the accuracy of the fix?"
    Apart from the usual reason (extra steps in the calculation leave room for errors in calculation), this has to do with the nature of bubble sextant observations, if I'm not mistaken. You center the object in the bubble. Since the Moon is only perfectly round one day a month, that is a somewhat difficult task. You have to imagine where the true center of the Moon is and place that at the center of the bubble. Doesn't apply to ordinary sextants!
    Still hoping to get back at that darn Moon, eh, Robert?
    42.0N 87.7W, or 41.4N 72.1W.

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