craftutils.observation.epoch.ImagingEpoch.frame_class.test_limit_synthetic(coord: ~typing.Optional[~astropy.coordinates.sky_coordinate.SkyCoord] = None, output_dir: ~typing.Optional[str] = None, positioning: str = 'inplace', mag_min: ~astropy.units.quantity.Quantity = <Quantity 20. mag>, mag_max: ~astropy.units.quantity.Quantity = <Quantity 30. mag>, interval: ~astropy.units.quantity.Quantity = <Quantity 0.1 mag>, ext: int = 0)