Credit/Permission: NASA, Hubble Space Telescope (HST), before or circa 2001 (uploaded to Wikimedia Commons by User:Calma, 2005) / Public domain.
Image link: Wikimedia Commons: File:HCG87 HST 2001-22-d-web print.jpg.
Local file: local link: galaxy_hcg_87.html.
File: Galaxies file: galaxy_hcg_87.html.