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    Index Card for Trig/Log Table
    From: Greg Rudzinski
    Date: 2009 Sep 8, 13:22 -0700

    An index card is handy when performing sight reduction with a trig/log table. 
    I set my card up with pre computed entries that are good for a few hours of 
    Sun celestial. The highlighted portions of the attached index card photos 
    show what can be pre calculated before an observation is performed. The 
    remaining computations can be performed at a leisurely pace in less than four 
    minutes. The result is accurate to four places even when the the SIN product 
    is calculated by slide rule. I like the trig/log tables because they are 
    compact enough to fit into my sextant case along with a K&E 4070-3 slide rule 
    .  
    
    
          
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