AO Polarimetry with IRCAL  Note: IRCAL Polarimetry mode is still
undergoing development! This mode is not officially supported
and you should almost certainly talk to me if you're
contemplating using it. The following notes are in no way
comprehensive.  Observing Procedure Summary  (This is just the
overview; read on below for the full gory details.)  Getting
Started  Waveplate Setup  First you need to mount the waveplate
on IRCAL. When not in use, it's kept in the IRCAL/GEMINI lab
room at Lick, on the shelf in a cardboard box labelled "IRCAL
Waveplate". It mounts onto the front of IRCAL using four screws,
which should already be in the screw holes. Just unscrew them,
mount the waveplate, and screw back on. This can be done by one
person but it's easier with two pairs of hands and somebody
holding a flashlight. The two control cables plug in to labelled
sockets on the AO bench to the left of IRCAL; both mechanisms
are currently at their zero positions. Ellie knows how to do all
this stuff if you need a hand.