Octant
Tool · mentioned in 8 journal entries
Planning
Westward
Fort Clatsop
Return
Post-expedition
NPS L&C NHT trail data © National Park Service
AI-extracted reference. Each entry below was identified by AI as mentioning Octant. Spelling variants may not be merged. see related variants →
Also discussed in Coues 1893 (4-vol edition):
2
mentions via 1
variant:
octant (2)
Clark: May 29, 1804
William Clark · May 29, 1804 · Missouri River near Gasconade River
"used for back observation with artificial horizon"
— transcribed as octant
Clark: June 2, 1804
William Clark · Jun 2, 1804 · Missouri River near Osage River
"used for back observation, error noted"
Clark: June 3, 1804
William Clark · Jun 3, 1804 · Missouri River near Osage River
"used for meridional altitude observation"
Clark: June 6, 1804
William Clark · Jun 6, 1804 · Missouri River near Osage River
"used for meridian altitude, error 2°"
— transcribed as octant
Clark: June 10, 1804
William Clark · Jun 10, 1804 · Missouri River near Jefferson City area
"used for back observation of sun"
— transcribed as octant
Lewis: July 16, 1804
Meriwether Lewis · Jul 16, 1804 · Missouri River near Platte River mouth
"used for back observation of altitude"
Lewis: July 22, 1804
Meriwether Lewis · Jul 22, 1804 · Near Platte River, Council Bluffs area
"14 inch radius, used for back observations of sun"
Lewis: February 16, 1806
Meriwether Lewis · Feb 16, 1806 · Fort Clatsop, winter quarters
"adjusting and ascertaining error"
