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We present a laser spectroscopic study of the Ã1Πu – X̃1Σg+ transition 13C mono-substituted C3 in 378–406 nm region. The 13C12C12C and 12C13C12C isotopologues are produced pulsed jet expansion, by DC discharging gas mixture ∼0.3% C2H2/Ar (with ∼1% natural abundance). By using induced fluorescence spectroscopy, thirteen vibronic bands belonging to electronic have been recorded for 12C13C12C, eleven which not reported before. transitions cover three fundamental vibrational modes (ν1,ν2l,ν3). For all bands, full width at half maximum spectral lines is found be narrower than 0.023 cm-1, allowing determine frequencies with an absolute accuracy ∼0.003 cm-1. Moreover, rotational analyses high-resolution data yielded accurate constants upper states studied here. 100–000, 04+0–000 12−0–000 13C12C12C, 02+0–000 04−0–000 less blended features 12C3, thus may used astronomical searches space.