Fourier transform emission spectroscopy of the E2Π-X2Σ+ transition of CaH and CaD

► Emission spectroscopy of the E-X system of CaH and CaD. ► Rotational analysis of the 0-0 and 1-1 bands. ► Combined fit of E-X lines and known infrared and near infrared data. ► Improved constants of the E state of the CaH and CaD.