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A two-band approach to nλ phase error corrections with LBTI's PHASECam

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Figure 2: System-level block diagram showing the optical light path through the telescope and the LBTI, including the beam combiner (red) and the NIC cryostat (blue)
Figure 3: LBTI’s approach to phase sensing demonstrated for one interferometric output for a noise-free model (top) and on-sky K band data taken on March 14, 2017 (bottom)
Figure 5: Sample nulling sequences, with the jump away from null indicative of a fringe jump displayed on the right.
Figure 6: Raw H and K band phases for a K band and H band setpoint of 0, with the simple difference and the diffmod metric overplotted
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