XMM-Newton Science Analysis System
omsource (omsource-1.25.1) [xmmsas_20160201_1833-15.0.0]
Meta Index / Home Page / Imaging Mode Photometry Window / Source type Controls
if this check-box is enabled the photometry is performed as for
an extended source. The user can change the axial-ratio by clicking on
the a/b spin-box and position-angle by clicking on
the Pos angle spin-box) and the inner and outer background radii for the
background determintaion (by clicking on the Inner bck and Outer bck
spin-boxes, respectively). Note that the background annulus will have
the same ellipticity and position-angle as for the photometry aperture.
XMM-Newton SOC/SSC -- 2016-02-01