Return the photon wavelength corresponding to a given grating dispersion (GAC) value.
Double_Type pix_get_grating_wavelength( Double_Type x, Double_Type y )
Calculates the wavelength, in Angstrom, for a given grating
position and using the current pixlib settings.
The x and y values are in the GAC coordinate system, and so
represent the grating dispersion and cross-dispersion
angles in degrees. The grating order - as set by
pix_set_grating() - must be non-zero for this routine
to work.
The pix_get_energy() routine can be used to find
the energy of the photon instead of the wavelength.
|
![[CIAO Logo]](../imgs/ciao_logo_navbar.gif){kind=logo}