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: http://xmm.vilspa.esa.es/user/sciobj/capella.html
Дата изменения: Tue May 19 10:31:38 1998 Дата индексирования: Mon Oct 1 20:14:10 2012 Кодировка: |
Two RGS were simulated for a 40 ks exposure, and the output data were combined. The following image shows an intensity display of the measured spectrum with dispersion coordinate as measured in the spatial dimension on the RGS Focal Camera (RFC) along the abscissa, and the energy response of the CCDs along the ordinate. The intensity is plotted on a logarithmic scale.
As can be seen, the different orders of the RGA can be separated well by using the energy response of the CCDs. The following two graphs show the measured spectrum per order, on a linear and on a logarithmic scale, respectively.
The narrow dips in the spectrum are due to the boundaries of the CCDs. In the actual implementation, the two RFC cameras will be offset against each other, in order to avoid loss of information due to the gaps between the CCDs of the RFC. This was not included in this simulation.
