What is the primary technique used for counting stars in specific, localized regions like dense stellar groupings?

Answer

Direct sampling of stars within a small, well-defined volume or area.

For localized studies where distinguishing individual stars is impossible due to concentration, astronomers count stars in a small 'patch' and then extrapolate that count based on the known size of the larger structure.

What is the primary technique used for counting stars in specific, localized regions like dense stellar groupings?
measurementSpaceastronomymethodsstarsastrophysicstelescopesstar countingcounting