Modified workflow to perform Voronoi segmentation, based on https://usegalaxy.eu/published/workflow?id=23030421cd9fcfb2. Input requirements: * RA: -- right ascension in degrees as a float number. * Dec: -- Declination in degrees as a float number * Radius: -- the radius of the cone to be queried in arcminutes as a float number * Pixel size: -- the size of the pixel in arcseconds * Band: -- the band (channel) of the image: g, r, z, i