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    Re: 3-Star Fix - "Canned Survival Problem"
    From: Greg R_
    Date: 2008 Jun 13, 16:30 -0700

    Aha - I was looking at your plot in a little more detail, and you just
    gave me a clue as to why my rough plot is off by a few miles. We agree
    on the assumed longitudes for Spica and Pollux (119�22.9'W and
    119�39.1'W respectively, though looks like you rounded the minutes
    instead of trying to deal with the tenths). 
    
    Just took a look at my notes, and saw that I had changed the assumed
    longitude for Vega from 119�06.8'W (which agrees with yours) to
    119�25.7'W, but can't find a reason for it yet (I'll have to work
    backwards through the calculations because I worked them on a sheet of
    paper vs. a sight reduction form - students, label your work... ;-)). 
    
    Might have something to do with changing from 249 vol. 1 to vol. 2, but
    seems like LHA Vega (and the resulting AP longitude) should have stayed
    the same for either method. 
    
    We sure do get spoiled easily by having calculators/computers to do all
    this messy grunge work for us...  ;-)
    
    --
    GregR
    
    
    
    
    
    --- d walden  wrote:
    
    > First by Naut Alm concise, and then HO249.  (was really too late for
    > the last star in 249, so had to assume a postion several degrees away
    > to get it, but it seemed to work out.)
    > 
    > 
    >       
    > > 
    > 
    
    
    
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