Credit: Credit: A. Sandage (Carnegie Observatories), A. Saha (Space Telescope Science Institute), G.A. Tammann, and L. Labhardt (Astronomical Institute, University of Basel), F.D. Macchetto and N. Panagia (Space Telescope Science Institute and European Space Agency) and NASA
Collaborative effort between astronomers around the world (both professional and amateur) to identify all of NGC and IC objects, building on the original notes with contemporary astronomers contributions. It collects images and gather data for the objects - classifications, positions, distances, diameters, colors, position angles, magnitudes, etc.