WSO/UV-HIRDES Exposure Time Calculator

Wavelength:  Å
Source flux at above wavelength (observed) :
Total flux:  ergs cm^-2 s^-1 Å^-1
Area flux per arcsec squared:  ergs cm^-2 s^-1 Å^-1 arcsec^-2
Instrument: Short Wavelength VUVES Short Wavelength VUVES (GaN + LiF) Long Wavelength UVES (CsTe + MgF2) Long Wavelength UVES (GaN + MgF2) Long Wavelength UVES (GaN + Quartz) Long Slit Spectrometer (UV) Long Slit Spectrometer (UV / GaN + MgF2) Long Slit Spectrometer (VUV) Long Slit Spectrometer (VUV / GaN + LiF)
Redundant Detector:
Science requirements:
Calculate the integration time necessary to reach a signal-to-noise ratio of 
Calculate signal-to-noise ratio (per spectral bin) obtained in an integration of  seconds
Spectral Bin Size:  Pixels