calc_total_non_source_noise_sq¶
- rubin_sim.phot_utils.calc_total_non_source_noise_sq(sky_sed, hardwarebandpass, phot_params, fwhm_eff)¶
Calculate the noise due to things that are not the source being observed (i.e. intrumentation and sky background)
- Parameters:
- sky_sed
Sed A Sed object representing the sky (normalized so that sky_sed.calc_mag() gives the sky brightness in magnitudes per square arcsecond)
- hardwarebandpass
Bandpass A Bandpass object containing just the instrumentation throughputs (no atmosphere)
- phot_params
PhotometricParameters A PhotometricParameters object containing information about the photometric properties of the telescope.
- fwhm_eff
float fwhm_eff in arcseconds
- sky_sed
- Returns:
- total_noise_sq
float total non-source noise squared (in ADU counts) (this is simga^2_tot * neff in equation 41 of the SNR document https://docushare.lsstcorp.org/docushare/dsweb/ImageStoreViewer/LSE-40 )
- total_noise_sq