Near-infrared observations of galaxies in Pisces-Perseus - IV. Color maps of 41 cluster spirals

We present near-infrared (NIR) color maps: uf a sample of 41 disk galaxies in the Pisces-Perseus su percluster. The sample objects, mainly members of the Pisces cluster, are a subset of larger sample imaged in the H band. For most objects: we present J - H and J - K images and elliptically-averaged radial color profiles. for some objects this is done only for the H - K col or. We compute global colors. hybrid NIR-optical colors: and estimate the c olors of the structural components. The J - K (global) color correlates wea kly with absolute luminosity and morphological type. We observe no trend wi th the presence of bars and AGNs: nor with position within the cluster. The NIR disk colors are slightly bluer than the global ones, with the possible Exception of those in the earliest spiral types. Finally, NIR color gradie nts in the images and in the radial color profiles are examined. NIR disk c olor gradients are small and prevalently negative; the few positive values are perhaps associated with the reddest disks.