In 1730 John Hadley invented the reflecting octant, and instrument used for navigation. This invention was honored by Nicolas-Louis de La Caille with the publication of his 1756 planisphere of the southern stars. The constellation was named l’Octans de Reflexion on that chart, but he changed it to Octans, its current name, for the planisphere’s second edition.
Octans Constellation Points of Interest
Interesting stars and objects.
Bright Stars in Octans
These are no stars in Octans with a magnitude of 3.0 or brighter.