Absorption oscillator strengths for the gamma(A(2)Sigma(+)-X(2)Pi), delta(C(2)Pi-X(2)Pi), and epsilon(D(2)Sigma(+)-X(2)Pi) bands of NO, which are relevant to the study of atmospheric processes are reported. We have calculated both electronic and vibronic transition probabilities with the molecular-adapted quantum defect orbital (MQDO) method, which has proved, in previous applications, to be an adequate theoretical tool in the context of Rydberg spectra. The results appear to be in good accord with the available experimental values and, with some exceptions, conform fairly well with theoretical data derived from rather more sophisticated methods.