XMM-Newton Science Analysis System: User Guide

next up previous contents
Next: 6.4.3 Interactive spectral extraction Up: 6.4 Description of the OM grism data processing chain omgchain Previous: 6.4.1 Grism specific tasks

6.4.2 Astrometry on grism images

As it has been mentioned in the previous section, starting with SAS 7.0, the grism processing chain includes the astrometry task omatt so that the sources of all extracted spectra are assigned astronomical coordinates that facilitate their identification. This is particularly useful in case of multiobject spectroscopy (full frame observations). Since SAS v8.0 a sky aligned grism image is also produced.

European Space Agency - XMM-Newton Science Operations Centre