Author Institution: Laser Spectroscoy Facility, Department of Chemistry, The Ohio State University; Department of Chemistry, University of Michigan, ; Department of Chemistry, H. L. Hunter Chemistry Laboratory , Clemson UniversityThe jet-cooled LIF spectrum of the CF3βOAβXΛ electronic transition has been observed. Rotational analysis of the high resolution spectrum of the origin band suggests that CF3βO has nominal C3vβ symmetry in both its ground and first excited state. Vibrational analysis of the dispersed fluorescence spectrum indicates that the Jahn-Teller effect is considerably stronger in CF3βO compared to CH3βO. The details of analysis will be presented