NavList:

Brad,

I'm not quite getting your point. I've attached one star-star table for discussion. It's to be entered with the altitude of each star at the time of the star-star distance sight. So there's no question of moving stars or time of observation.

The concept is valid for all altitudes, even down to zero. Of course there's additional corrections for non-standard temps and pressures. But I've only tabulated down to 15d altitudes because of the poor observations at these lower altitudes -- not because of any limitations in altitude corrections.

Note how small the "clearing" corrections are and how insensitive they are to the altitudes.

John
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