9.21.10 [2]

I've ordered parts for the new and improved experiment. Mainly just a ton of lenses, they should arrive relatively quickly. I'm hoping realignment should be straightforward, but I'm worried since the tolerances on the reimaging telescopes is pretty thin. I might have to resort to CADing everything out, but even that would involve a lot of guesswork.

There's apparently a conference submission deadline at the end of the month, so it turns out that my goal to do multichannel adaptive control by the end of September is a good plan. I'm going to try to get some decent results that can go into a preliminary paper before I tear my experiment asunder and start over. For the time being I'll have to run <10Hz so that the single delay DM model holds.

While the adaptive loop seems to work well without much modification, so far I haven't gotten much out of the optimal IIR filter/Kalman predictor. It works well enough in flattening the PSD when I use the identified disturbance model directly to generate the noise, but in the experiment its effect is negligible. I suspect this is a result of a shitty ID. It might be interesting to look at the prediction error with the actual experiment/simulation, instead of just driving the identified model.

Overall the plan is to spend the remainder of September getting preliminary results for this conference, then worry about experimental modifications in October. Make it so.