Kuma 5 An old program to calculate diffraction patterns seen be the x-ray detector. Download Cuma5 To use it simply press arrow buttons. This will rotate around Phi and Chi in capa geometry. The up right corner shows hkl indices of displayed reflection (just set the pointer over a reflection in right window) . The left window shows the reciprocal space together with the Ewald sphere. In settings a wave length and cell parameters can be set. The program is written in old Windows API therefore is slow.