Gratings

Three gratings are installed in LUCI. All of them were tested for their efficiencies by the manufacturer. The company measured in a Littrow setup. LUCI reaches about 90% ([FDR-OP]) of the nominal efficiencies because it is not working under Littrow conditions. See Appendix D for the plots. ASCII-files are also offered.

• High-Dispersion grating (HD-grating) with 210l/mm (LUCI 1+2)
• H+K-grating with 200l/mm (LUCI 1+2)
• Ks-grating with 150l/mm (LUCI 1)
• AO-grating with 40l/mm (LUCI 2)