Exposure Time Calculator

Source Properties
J-band Magnitude:
Model Spectrum
Effective Temperature in K (range from 2300 to 12000 K):
Logarithmic Surface Gravity (range from 0.0 to 6.0):
Planck
Effective Temperature in K:
Observing Conditions
Airmass:
Enter Conditions
V-Band Seeing at Zenith [arcsec]:
V-Band Extinction Coefficient:
Median Conditions
Median V-Band Seeing at Zenith [arcsec]:	0.9
Median V-Band Extinction Coefficient:	0.18

	Output Options
Estimate SNR per resolution element for given Exposure Time		Estimate Exposure Time for given SNR and Wavelength
Exposure Time [sec]:		SNR:
		Wavelength in Angstroem:
		Plots and Tables for SNR at exact Wavelength
		Plots and Tables for SNR at maximum of corresponding order
		Plots and Tables for SNR as median of corresponding order
		→ Exposure Time [sec] for SNR at exact wavelength::
		→ Exposure Time [sec] for SNR at maximum of corresponding order:
		→ Exposure Time [sec] for SNR as median of corresponding order:

This Exposure Time Calculator is based on the code developed by Thomas Stuber during his Master Project at the LSW.
It is maintained by Adrian Kaminski.