1Peter J. Domaille, Timothy C. Steimle, and David O. Harris, J. Mol. Spectrosc. 68, 146 (1977).""Author Institution: Quantum Institute and Department of Chemistry, University of California; Central Research and Development Department, E. I. du Pont de Nemours and CompanyThe excitation spectrum of the A2Πr​−X2Σ+ band system of SrF has been measured using tunable cw dye laser excitation spectroscopy. The spectrum has been analyzed to obtain rotational and vibrational constants for the A2Πr​ and X2Σ+ states. Results from our previous Microwave-Optical Double Resonance measurements for the X2Σ+state1 were merged with those from this optical analysis to obtain more precise values for the spectroscopic constants. Results of the analysis will be discussed