Spectrograph Exposure Time Calculators (ETC)
Spreadsheet for compute limit magnitude detectivity of a given spectrograph


SimSpec V4 spreadsheet (for a classical reflective grating spectrograph) - revised by Ken Harrison


Download SimSpec_V4_0.xls (english version)


Original SimSpec spreadsheet (for a classical reflective grating spectrograph)

 
Download SimSpec.xls


ETC for transmission grating spectrograph


Download SimTrans.xls


ETC for LHIRES III spectrograph


Click here (special english tutorial page)


ETC for LISA spectrograph


Click here for a special page about LISA ETC (english)


Some ressources about ETC methods on my website:

Parameters for compute a "classical" spectrograph (english and french text)

More about methods for compute performances of a classical spectrograph

How to compute the signal to noise ratio of a spectrograph (english version) - Version franšaise ici


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