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    Temperature and pressure
    From: Bruce Stark
    Date: 2002 Mar 6, 20:10 EST

    Some of the lunarians on the List like to correct their altitudes for the
    effects of nonstandard temperature and pressure on refraction. I purposely
    left those corrections out of my lunar distance method as not being worth the
    extra steps.
    
    But Robert Eno was observing lunars in the dead of winter up near the arctic
    circle. Since it doesn't work to apply the usual extra corrections to the
    altitudes when using my Tables, I worked out a set of "Cold Weather
    Increments" for him. It gives a correction to H~H and a correction to Q. I
    didn't expand the table to include hot weather.
    
    If anyone is observing in arctic winter conditions I'll be glad to send a
    copy of the "Increments." But the main point of this posting is: The usual
    nonstandard temperature and pressure corrections should not be used with my
    Tables.
    
    Bruce
    
    
    

       
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