Sci IPT 2005 14 Dec

John, Martin, Robert, Carlos, Allison, Kawabe, Jeff,
Lucas, Hogerhijde, Guilloteau, Dutrey, Bacmann, Emerson Holdaway

Wootten: Reported on debut of PMCS, progress of rebaselining, Statements of
Work, and other activities.  Need 10% descope, which may come from site
characterization.  

Conway:  Working on memo 503.  The periods I have recommended for baseline
calibration may be too long.  Lucas--we have to make a diffeence in phase term
due to LO distn and that due to propagation.  JC: 
DE: Heirarchy of signals to antennas sent out--21Hz (48ms) is the lowest.
Hills:  Az slews in certsin points of sky have the choice of how to go to source.
We can measure the phase shift from windup.  DE: Worry is that it is not reproducible.
RH: Remind us if plan is to have a special mechanism to support the fiber as it goes
thru the beasring and keeps tension on it.  DE: That is not ruled out but it is not
what is being designed right now.  JC: So we really don't know what we can achieve
right now?  DE: I'm not the right person--Shillue is.  30 microns if antenna moves
180 degrees is not a problem.  

SG:  multi-load news 
M-P and Pardo memo on measurement of atmospheric fluctuations.  SG working on memo
on multiload in light of this, update to previous one.  With relaxed spec of 3 and 5
per cent.  

Li\ucas:  allhands meeting very good.  many tech discussions, general discussions.
SSR mostly involved in obs mode development, trying to clarify the ways they will be
implemented in the computing system and the role of the SSR.  Also discussed cal
database which stores and archives calibrastions.  Recently R2 release of software.
Testing for that included offline and pipeline.  Tests just finished.  Report in
progress.  SSR meeting on Friday.  More bthan 50 ppl.

MiHo: New drsps, revision

RL: What is commissioning and who is in charge?  Many things we thought should be under
PS are not.  Tasks were missing, some unclear.  Time discrepancies.  A set of details
on Rick's schedule circulated.  Useful meeting with SSR and computing to discuss
requirements in Garching--outcome that there were no serious new requirements.

MaHo:  Holography at OSF?  Rough answer is we have enough sensitivity to get 0.8m
resolution--good enough to confirm elevation dependance of surface is reasonable but
not good enough for setting panels.  Need ten antennas to get setting accuracy 0.4m
accuracy.  For .2m resolution one would need the entire array, or integrate for many
hours.  Looked at masers and QSOs--QSOs better with our wide bandwidth at its
quiescent flux of 15 Jy.  RH: Could use planet on very short baselines--Mercury.
SG: With a small planet.  


Characterization--RH: Why are we still doing this?  MH: AS and AO have meteorological
backgrounds, and have new eyes to look at the data with.  AS working on theoretical
estimate of where structure function will turn over.