Camera 2, Filter F237M Notes: CO. Thermal background important. See also “Camera 3, Filter F240M”. Central wavelength: 2.3692 μm Mean wavelength: 2.3697 μm Peak wavelength: 2.4338 μm Wavelength range: 2.29–2.44 μm FWHM: 0.1540 μm Maximum throughput: 34.756% Central pixel fraction: 0.067 Figure A.33: NIC2, F237M Throughput