I think I have finally found a Mode Matching solution for our new Input Mode Matching Telescope! And after looking at the layout diagram with Koji and Raffaele, it seems like all of the optics will fit into the chambers / onto the tables (not true as of last week).
3. RoCMMT1 is -5m
RoCMMT2 is 8m,
with the MMTs 1.89m apart.
This is a 1.6x telescope.
MMT2 is 2.2641m from the PRM
MMT1 is 2m from MC3.
The Condition Number for this optical chain is 89219047.5781.
This layout is very similar to the one that Koji posted on the wiki yesterday: Upgrade09/Optical Layout. The difference is that I want to move MMT1 ~20cm closer to the MC13 table, so just on the other side of the main red beam that goes directly to PRM. There is plenty of space there, so it should be all good. The tricky bit is that the flat steering mirrors fit into things now while they are piezos, but they will be trickier to fit if we make them into Tip Tilts. But I have full faith in Koji's amazing optical table layout skills, that he can make it happen.
Unless there are major objections, I think this is the MMT that we're going to go with. (So speak now or forever hold your peace.) The angle between tilt and translation isn't quite what we'd like it to be (at ~18deg), but it's not too terrible. And we still have 99.5% overlap which is very important.