Camera 2, Filter F187N Notes: Paschen α. See also “Camera 1, Filter F187N” and“Camera 3, Filter F187N”. Central wavelength: 1.8740 μm Mean wavelength: 1.8740 μm Peak wavelength: 1.8746 μm Wavelength range: 1.864–1.884 μm FWHM: 0.0194 μm Maximum throughput: 24.585% Central pixel fraction: 0.102 Figure A.23: NIC2 F187N Throughput