What celestial region did John Herschel systematically survey to complete his father's astronomical work?

Answer

The Southern Hemisphere

John Herschel built upon his father William's work by systematically surveying the Southern Hemisphere skies, leading to the publication of his catalogue in 1864.

What celestial region did John Herschel systematically survey to complete his father's astronomical work?
Astronomerscienceobservationnebulastar catalog