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: http://www.stsci.edu/jwst/instruments/niriss/performance-sensitivity/niriss-imaging-sensitivity
Дата изменения: Unknown Дата индексирования: Tue Apr 12 00:25:43 2016 Кодировка: Поисковые слова: ultraviolet |
Estimated End-of-Life NIRISS Imaging Sensitivity The following table gives the point-source flux that can be obtained with S/N = 10 in 10 ks. End-of-life throughputs are assumed. ====================== Filter Sensitivity [nJy] ---------------------- F090W 20.0 F115W 17.5 F150W 14.3 F200W 11.9 F277W 14.5 F356W 12.6 F444W 25.1 ---------------------- Assumptions: OTE Transmission: specified by MR-211 Zodiacal Background: specified by MR-51 Detector CDS Read Noise: 16 electrons Detector Dark Current: 0.015 electrons/s Extraction Radius: 1.54 pixels for wavelengths up to 2.5 microns 2.50 pixels for wavelengths between 2.5 and 4.0 microns 2.72 pixels for wavelengths beyond 4.0 microns