Camera 2, Filter F180M Notes: HCO2 and C2. Thermal background important. Central wavelength: 1.7970 μm Mean wavelength: 1.7972 μm Peak wavelength: 1.8132 μm Wavelength range: 1.76–1.83 μm FWHM: 0.0686 μm Maximum throughput: 24.913% Central pixel fraction: 0.110 Figure A.22: NIC2, F180M Throughput