KnowraLunar distance methodLinked fromLinked fromThe 8 pages that link to Lunar distance method, each with the reason it gives.All 8Related 5Compared with 3Marine chronometerCompared with: It offered a celestial alternative to carrying an accurate timekeeper.John HarrisonCompared with: It was the principal practical alternative to carrying an accurate clock.Lunar theoryRelated: Its tables required reliable predictions of the Moon’s position against the stars.Nevil MaskelyneRelated: Maskelyne championed this method as a navigational alternative to marine timekeepers.Astronomical tablesRelated: Navigators compared observed lunar distances with predicted values in astronomical tables.BackstaffCompared with: It addressed longitude, which a backstaff altitude alone could not determine.HMS EndeavourRelated: Cook used lunar-distance observations to determine longitude during the expedition.Guillaume DelisleRelated: Lunar observations became one way to improve the longitude data available to mapmakers.