CARONTE SNR calculator Instrument Filter U (Johnson/Bessell) B (Johnson/Bessell) V (Johnson/Bessell) R (Johnson/Bessell) I (Johnson/Bessell) u' (SDSS) g' (SDSS) r' (SDSS) i' (SDSS) z' (SDSS) Mode Mode 0, EM Gain 0 Mode 1, EM Gain 60 Exposure Time Mode S/N Mode Exp. time (s) Object Type Point Extended Apparent Magnitude Sky Sky Brightness Bright Grey Dark By user: Airmass FWHM Extinction Graphical output S/N vs. Exptime S/N vs. Magnitude Peak vs. Exptime
