Grating efficiency

The efficiencies of the X-1A gratings (as calculated by Vladimir Martynov of LBL) are available from IDL using the command x1greff. If you want to find out the calculated inboard branch grating efficiency at 458 eV, do:

IDL> x1greff,458.,eff,/inboard
IDL> print,eff

To get the calculated efficiency on the outboard branch for an array energies, do

IDL> x1greff,energies,eff,/outboard

Example plots are shown in Fig. A.1

Figure A.1: X-1 grating efficiency, as calculated by Vladimir Martynov.

IDL> x1greff,/plot

IDL> x1greff,/plot,/ratio