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XMM-Newton Science Analysis System


omsource (omsource-1.25) [xmmsas_20141104_1833-14.0.0]

a/b Annuli controls Help Home Index

Meta Index / Home Page / Imaging Mode Photometry Window / Annuli controls

Pos angle

If the source is ``extended'' then this spin-box sets the position-angle of the semi-major axis (measures anti-clockwise from the +ve x-axis).



XMM-Newton SOC/SSC -- 2014-11-04