Camera 2, Filter F222M Notes: CO continuum. Thermal background important. See also “Camera 3, Filter F222M”. Central wavelength: 2.2177 μm Mean wavelength: 2.2183 μm Peak wavelength: 2.1866 μm Wavelength range: 2.15–2.29 μm FWHM: 0.1455 μm Maximum throughput: 28.186% Central pixel fraction: 0.076 Figure A.32: NIC2, F222M Throughput