AM 1258 303
Group of four galaxies in the constellation of Centaurus, note the faint outer halos.
Image data: LRGB (L 18x1200s, R 8x20m, G 8x20m, B 8x20m); seeing 0.9-1.1 arcsec, 80cm f/7 Astrooptik Keller corrected cassegrain, FLI Proline 16803, Baader Filters, Prompt 7 CTIO Chile, robotic data acquisition, processing: Volker Wendel