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» Online Classroom   » Tech Support   » Celestial Navigation Course   » Star Finder Book page 51 - 52

   
Author Topic: Star Finder Book page 51 - 52
David Burch


 - posted August 23, 2011 10:18 PM      Profile for David Burch           Edit/Delete Post 
there is a sentence here with typos and poor punctuation.

it reads:

LHA of Aries at 12:00 = 61.4°, so 12:00 GMT is at 112° on the white disk rim scale. Each 15° from there corresponds to 1 hour away from noon: 12:00 46.4° is 11:00 GMT 76.4° is 13:00 GMT, and so forth.
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First, the LHA Aries is not 61.4 as you note, but rather closer to 61.9. then there is another typo. the 112° should be this same 61.4, and then the punctuation is terrible for the last part of the sentence.

using 61.4 it should read:

LHA of Aries at 12:00 = 61.4° , so 12:00 GMT is at 61.4° on the white disk rim scale. Each 15° from there corresponds to 1 hour away from 12:00. Namely, 46.4° is 11:00 GMT; 76.4° is 13:00 GMT; and so forth.

or to make it better change all the .4s to .9s.
(ie 112° 01.5' - 50° 10' = 61° 51.5' = 61.9°)

thanks to ash13brook for pointing this out.

From: Starpath, Seattle, WA


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