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We present colour transformations for the conversion of the Wide-Field SurveyExplorer (WISE) W1, W2, and W3 magnitudes to the Johnson-Cousins (BVIc), SloanDigital Sky Survey (gri), and Two Micron All Sky Survey JHKs photometricsystems, for red clump (RC) stars. RC stars were selected from the Third RadialVelocity Experiment (RAVE) Data Release (DR3). The apparent magnitudes werecollected by matching the coordinates of this sample with different photometriccatalogues. The final sample (355 RC stars) used to obtain metallicitydependent-and free of metallicity- transformations between WISE andJohnson-Cousins, SDSS, 2MASS photometric systems. These transformationscombined with known absolute magnitudes at shorter wavelengths can be used inspace density determinations for the Galactic (thin and thick) discs atdistances larger than the ones evaluated with JHKs photometry alone, henceproviding a powerful tool in the analysis of Galactic structure.

Transformations between WISE and 2MASS, SDSS, BVI photometric systems: II. Transformation equations for red clump stars