Keywords: Messier 103 2MASS.jpg The open cluster Messier 103 http //www ipac caltech edu/2mass/gallery/messiercat html 2MASS Atlas Image Gallery The Messier Catalog Two Micron All Sky Survey 2MASS a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology funded by the National Aeronautics and Space Administration and the National Science Foundation 2MASS Atlas image Messier 103 2MASS Atlas Image Gallery The Messier Catalog BIG SIZE |