Which viewing technique exploits the superior faint-light sensitivity of the peripheral retina over the center?

Answer

Averted vision

Averted vision is a technique where the observer looks slightly away from the nebula, directing the faint light onto the peripheral vision which is richer in rods, often causing the object to 'pop' into faint view.

Which viewing technique exploits the superior faint-light sensitivity of the peripheral retina over the center?
Spaceastronomystarscelestial objectsnebulaeVisibility