Two images of the Orcus-Vanth system, obtained by summing all individual observations and stacking the resulting cube for the whole range of wavelengths. Left: our 2010 February 23 UT observations using the appulse NGS AO correction, representing a total integration time of 4050 s. Both Orcus and Vanth are easily separable in the image. Right: our 2010 March 13 UT observations using the LGS AO correction, without TTS reference (see text), corresponding to a total integration time of 5400 s. The angular resolution provided in that mode forbids the detection of Vanth, whose flux, spread over many pixels, is hidden within the background noise.