Camera 3, Filter F187N Notes: Paschen α line. See also “Camera 1, Filter F187N” and“Camera 2, Filter F187N”. Central wavelength: 1.8748 μm Mean wavelength: 1.8748 μm Peak wavelength: 1.8756 μm Wavelength range: 1.865–1.884 μm FWHM: 0.0191 μm Maximum throughput: 22.56% Central pixel fraction: 0.439 Figure A.43: NIC3, F187N Throughput