zeropoint¶

simcado.simulation.zeropoint(filter_name='TC_filter_Ks.dat')[source]¶

Returns the zero point magnitude for a SimCADO filter

This is an end-to-end simulation which aims to take into account all transmission effects incorporated in a SimCADO simulation.

The returned zeropoint is for an exposure of 1s. Therefore, magnitudes from measured fluxes in simulated images should be calculated as following

mag = -2.5*np.log10(counts/texp) + zp

where counts are the background subtracted counts, texp is the exposure time and zp is the zeropoint for the filter in question, calculated here.

Parameters

Returns