Acquisition camera beam analyzer: the acquisition and guiding camera provides, for all four telescopes simultaneously, images of the pupil guiding lasers, a Shack-Hartman wavefront sensor, the pupil illumination, and the field (right: top to bottom, the figure shows only one of the four telescopes). All optical functions are implemented in a single, complex beam-analyzer optics (photograph), located directly in front of the detector. A dichroic beam splitter at the entrance of the beam analyzer redirects the 1200 nm pupil guiding laser to the 2 × 2 lenslet. H-band light is twice split to image the field for acquisition and guiding, and to feed the Shack-Hartman sensor and pupil viewer.