Hi,
Thanks you very much for your help in the past, again!
When i use sextrctor to figure out the centroid of extracted source, it seems to use both semi-major axis、semi-minor axis and background flux.
I want to know if i remove the background flux, will there be any problem? Or how does the backgroud flux matter in the process?
Edward
Hi, Thanks you very much for your help in the past, again! When i use sextrctor to figure out the centroid of extracted source, it seems to use both semi-major axis、semi-minor axis and background flux. I want to know if i remove the background flux, will there be any problem? Or how does the backgroud flux matter in the process? Edward