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Hewitt,

I'm using a U.S. Naval Institute 1959 edition hard cover table that
contains a great set of easy reading tables. Ebay has some for under
$10. My traveling trig/log table is a paperback Earl Milton Bigsbee
1977 edition that fits in the sextant box nicely but is a little bit
hard to read due to the small print size.

Greg

On Sep 9, 2:12�pm, Hewitt Schlereth  wrote:
> Really interesting, Greg. What log/trig tables are you using? �-Hewitt
>
> On 9/8/09, Greg Rudzinski  wrote:
>
> > 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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