The data for the PSF fits is simulated using MARX v 2.17 as the mirror and the grating model. An example MARX parameter file is shown here The MARX output data (ypos.dat and zpos.dat) is read using IDL and used to construct an image with a pixel size of one micron and oriented so that the dispersion direction is along the x-axis in the image. These images are then projected along the dispersion or cross-dispersion axis to obtain the profile. This profile is then rebinned by a factor of four and then fit with a one dimensional Gaussian.PSF FITSG(x) = (2¦Ð¦Ò)-0.5 exp(-(x-x0)2/(2σ2))
Where σ is the width of the Gaussian and x0 in the center of the function.
The first column are links to postscript plots of the fits.
The second column is the fitted Gaussian coefficients. This includes the center in mm from the zero order (Disp) or the distance from the dispersion axis (X-Disp), the Gaussian width (um), and the Gaussian norm. Column 5 of the coefficient table contains the reduced chi squared value for the fit, followed by the energy (keV) , order and position relative to the optical axis (arcmin). Below this the one sigma statistical errors are given for the center position, width, and norm.
The Third column of the table lists the fitted orders.
| HEG | MEG | ||||
| PS figs | rdb Tables | Orders | PS figs | rdb Tables | Orders |
| Plots | 0.532 keV | -2,-1,0,1 | |||
| Plots | 1.497 keV | -2,-1,0,1 | Plots | 1.497 keV | -4,...,+3 |
| Plots | 3.50 keV | -4,...,+3 | Plots | 3.50 keV | -10,...,+7 |
| Plots | 4.50 keV | -6,...,+8 | Plots | 4.50 keV | -10,...,+9 |
| Plots | 6.4 keV | -9,...,+6 | Plots | 6.4 keV | -10,...,+10 |
| Plots | 8.05 keV | -6,...,+8 | Plots | 8.05 keV | -1,0,+1 |
| Plots | 10.0 keV | -4,...,+4 | |||