Calibration Access and Data Handbook

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PSFmap: two-dimensional array containing the selected part of the PSF at the requested azimuth and field angle. The PSF map is sampled with either EPIC MOS (0.040 mm) or EPIC pn (0.140 mm) pixel size. The PSF map cover a field of view of (Y-EXTENT x Y-PIXSZ, Z-EXTENT x Z-PIXSZ) i.e initially 10.24 x 10.24 mm or 4.7 by 4.7 arcmin (256 x 256 EPIC MOS pixels or 73 by 73 EPIC pn pixels). The integral of the PSFmap is normalized to 1. The undersampling of the PSF by the pn pixels is taken into account by retrieving the EPIC pn alignment parameters vs the telescope.

Michael Smith 2011-09-20