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At the 1.5GeV electron storage ring NewSUBARU, the two different kinds of systems for measuring betatron tunes have been developed: the high precision tune monitor and that for automatic correction. The vertical and horizontal tunes can be observed during the user time, because a stripe-line kicker to enlarge the beam lifetime vertically shakes electron beams. The high-precision tune monitor has the resolution of 0.0002 and uses frequency analysis methods such as SRSA, zoom FFT, STFT, in addition to usual FFT. Tune shifts due to a slight difference of filling patterns during top-up operations can be observed with this monitor. The another tune monitoring and automatic-correcting system has been developed to compensate tune shifts caused by the decrease of the stored current, the difference of filling patterns during top-up operations, and the energy ramp from 1.0 to 1.5 GeV. This system estimates betatron tunes every 0.5 sec and can keep tunes to the optimal values. The system also has a tune survey function that can automatically measure the beam lifetime in a tune diagram.
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