Default mag_err is 0.05, arbitrarily

def starmodel_props(self):
        """Default mag_err is 0.05, arbitrarily
        """
        props = {}
        mags = self.mags
        mag_errs = self.mag_errs
        for b in mags.keys():
            if np.size(mags[b])==2:
                props[b] = mags[b]
            elif np.size(mags[b])==1:
                mag = mags[b]
                try:
                    e_mag = mag_errs[b]
                except:
                    e_mag = 0.05
                props[b] = (mag, e_mag)

        if self.Teff is not None:
            props['Teff'] = self.Teff
        if self.logg is not None:
            props['logg'] = self.logg
        if self.feh is not None:
            props['feh'] = self.feh

        return props