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Monthly Reports — 2004 February
 
Murison continued working on the adaptive optics (AO) front end for the FTS project. After some purchases from optics vendors, Murison now has a test rig set up in his office that functionally replicates the latest AO design. We are currently waiting for a more sensitive video camera to arrive. Murison finished debugging the new ideal thin lens addition to his computer algebra ray tracing package (AESOP). He also has analytically traced three optical paths in the new AO design with misalignments: star to video camera, star to optical fiber, and fiber end plane to video camera. Each of these paths either reflects from or transmits through the pellicle, which is a thin-film beam splitter. Murison also derived the equations of motion for the AO mirror, to use as a guide for the mirror model in the feedback loop in the AO control program.

Murison observed, using the FTS, three nights in February. Fortunately, he was able to install pcAnywhere on his home computer and set it up to simultaneously control via the internet the two FTS computers, which are currently located with the instrument at the Clay Center in Boston. The remote observing scheme works very well.

Murison continued refining the FTS project web site. To enhance its current use by the team as a repository for documentation of recent FTS work, among other things Murison implemented a "weblog".

Murison and Efroimsky began work on their joint projects on the dynamical stability of bodies orbiting oblate, precessing planets. Murison and his student Andrei Munteanu continued work on their orbit-orbit distance project. They are now concentrating on the search for a coordinate frame that geometrically simplifies the problem.

Murison spent considerable time in his duties as Secretary of the AAS Division on Dynamical Astronomy. In addition to continuing to help organize the annual meeting, he conducted the 2004 Division elections.