CELESTIAL-L3.3

Sight reduction tables: NP 401 and AP 3270

CELESTIAL-M3 · Sight reduction and the position line · CELESTIAL-M3-A The intercept method of Marcq St Hilaire, worked by the cosine formula and by NP 401 and AP 3270, and plotted to a fix.

Tables need whole degrees, so you reduce from an **assumed position**, not the DR. The same sun sight, reduced by NP 401, lands on the same line within **0.1 mile**.

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