These HST data are from proposal 10774: H.A. Weaver (JHU/APL), S.A. Stern and J.R. Spencer (SwRI), M.W. Buie (Lowell Obs.), E. Young, L.A. Young, and A.J. Steffl (SwRI), M. Mutchler (STScI) and W.J. Merline (SwRI).
This image is black and white and represents the range of brightness recorded by the ACS/HRC camera.