finding intensity of a star

[Saurabh Budholiya]

I am student of IIT kanpur working at Astronomy club IITk.I want to find intensity of a star using astroimageJ
How to do it?
and does pixel value represent intensity

[karenacollins]

See this post:
http://astroimagej.1065399.n5.nabble.com/Star-s-Intensity-td158.html