Celestial navigation - AstronavigationSight reduction: - Marcq Saint Hilaire Line of Position, intercept method (p=Ho-Hc, Zn) - Observed altitude Ho by nautical almanac data - Local hour angle (LHA) - Plot of the LoP on Google mapsSight reduction is the process of deriving from a sight the information needed for establishing a line of position.This app is a calculator to get the intercept from the assumed position of the observer AP(latitude, longitude), the geographical position of the celestia
l body observed, GP(Dec, GHA), and its corrected altitude Ho.Manual and examples in the developer's website.Ref: https://en.wikipedia.org/wiki/Sight_reduction
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