Lewis: January 26, 1805
On this Saturday, Lewis recorded a celestial observation taken at the expedition's winter quarters. Using a sextant and an artificial horizon made of water, he measured the meridian altitude of the sun's upper limb at 48 degrees 50 minutes. From this measurement, he calculated the latitude of their position as 47 degrees 21 minutes 47 seconds north. The brief entry contains no other notes on weather, activities, or interactions with the expedition party or local inhabitants.
Saturday January 26th 1805 Observed Meridian Altitude of sun’s U. L. with
sextant and artificl. Horzn. of water 48° 50 Latitude deduced from this
observatn. N. 47 21 47
Read this entry in modern English AI-translated
Saturday, January 26th, 1805. Observed the meridian altitude of the sun's upper limb with a sextant and an artificial horizon of water: 48° 50'. Latitude deduced from this observation: N. 47° 21' 47".
This modernization is AI-generated for accessibility. The original above is the authoritative version.
Entities mentioned in this entry
Auto-extracted from the entry text. Hover any entity for context.
