The combined band oscillator strength of the delta(0,0) and beta(7,0) bands of nitric oxide has been measured in absorption by utilizing a vacuum ultraviolet Fourier transform spectrometer to resolve the rotational line profiles. We give accurate rotational line positions of the delta(0,0) and beta(7,0) bands, and improved term values up to J=19.5 for the C (2) Pi(upsilon = 0) and J=8.5 for the B (2) Pi(upsilon = 7) levels, measured from the ground state. A deperturbation procedure has been used on the mixed levels, and the calculated molecular constants are in good agreement with previous work.