astrom_precision¶
- rubin_sim.maf.utils.astrom_precision(fwhm, snr)¶
Calculate the approximate precision of astrometric measurements, given a particular seeing and SNR value.
- Parameters:
- fwhmfloat or numpy.ndarray
The seeing (FWHMgeom) of the observation.
- snrfloat or numpy.ndarray
The SNR of the object.
- Returns:
- float or numpy.ndarray
The astrometric precision.