mulenssystem.py 文件源码

def t_E(self):
        """
        *astropy.Quantity*

        The Einstein crossing time (in days). If set as a *float*,
        assumes units are in days.
        """
        try:
            t_E = self.theta_E/self.mu_rel
            return t_E.to(u.day)
        except Exception:
            return None