Figure 6: Relative alignment of the X-ray and optical images
The relative alignment of the X-ray and optical images is discussed in SXT Calibration Note 36 (R. Fuller, Jan-94). The actual values were determined by T. Metcalf and are given in terms of SXT full-resolution (2.453 arcsec) pixels as:
where the negative values indicate West and South, respectively. Fig. 6 shows the
relative alignment of the X-ray, narrow band and wide band boresights. The values listed above
may change as the calibration is refined. The most current
values can be obtained with the routine GT_SXT_AXIS using the command:
IDL> print,gt_sxt_axis(1,/rel) ; NaBan - X-ray
IDL> print,gt_sxt_axis(2,/rel) ; WdBan - X-ray