Exposure Time Calculator

Input Parameters

Additional Parameters
Calculation Results
Computed or specified efficiency [%]
Saturation level at PSF peak [% FWC] [%]
Assuming 100% efficiency User input 1 min 10 min 30 min 1 h 3 h 6 h
Stellar granulation noise [ppm]
Photon noise [ppm]
Total noise including stellar granulation [ppm]
Total noise without stellar granulation [ppm]
Assuming computed or specified efficiency
Stellar granulation noise [ppm]
Photon noise [ppm]
Total noise including stellar granulation [ppm]
Total noise without stellar granulation [ppm]

Comment on exported PDF
Exposure time guidelines
Minimum suggested exposure time: PSF peak at 10% of full well capacity
Maximum suggested exposure time: PSF peak at 85% of full well capacity, or the limit exposure time of 60s

Cheops ETC V 2.0
Copyright ©2018-2020 Space Research Institute, Austrian Academy of Sciences
Monika Lendl, Harald Ottacher

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