XMM-Newton Science Analysis System


omsource (omsource-1.25) [xmmsas_20141104_1833-14.0.0]

Meta Index / Home Page / Fast Mode Photometry Window / Summary of Widgets

PSF FIT2

If this button is checked then point-spread function fitting photometry will be undertaken, and the positions of the sources will be re-determined by a simplex minimization algorithm. Again, nearby sources can also be included in the fit. Please note that this method can significantly increase the CPU time.