We had a pretty windy night (20 mph +) with poor seeing (1.5"). So it was hard to reproduce the ellipticity that Haojing had during his run (good seeing + moderate wind). But we did do several interesting tests. 1) Charles and Daniel explored any latency in the guide signals. i.e dropouts or delays in signals sent out by ODI v. signals received by TCS. Daniel found one bug on the ODI side that may have contributed to guiding errors through latency. That was fixed. 2) We clearly picked up sharp oscillations (seen in power spectrum of guider) when pointed close to the wind. As expected, that was reduced when we pointed away. But the oscillations were not limited to the elevation axis alone. Not surprising since we had quite some wind. This produced ellipticity, but not sure if we learned anything new. We did try guiding at fast rates so as to sample the vibration better. 3) Daniel made a start to implementing rotational guiding. Near zenith we can see signs of rotation from his new diagnostics. Not yet using these to drive the rotator. 4) No laser hunting. We did not get a chance to put in the U band filter tonight. I conferred a bit with the RoboAO team and we will try this first thing tomorrow (U filter to be put in during the daytime). 5) We re-aligned the pointing camera using WHIRC. Good fit.