XMM-Newton SAS Home Page
XMM-Newton Science Analysis System


rgsangles (rgsangles-4.7.8) [xmmsas_20160201_1833-15.0.0]

...../rgslib/index.html).[*]
Please note that the calling interface to the described functions and subroutines of the OAL and of the CAL is not accurate, but is specified as pseudo-code for illustrative purposes only. The documentation of the OAL and CAL has to be consulted to find the actual calling sequence.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
....[*]
This of course evaluates $=0$. However the implementation in rgslib is such that gratingAspectAngles calculates these angles with respect to an imaginary central grating of the RGA, and hence $\phi_0$ and $\psi_0$ are the angles of incidence on this grating corresponding to an on-axis source.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.