The first two weeks of January I spent preparing my poster contribution 
"Orbits of double stars from long-baseline interferometry" and attending 
the American Astronomical Society meeting in Arlington, VA. 

I finalized the orbits of six small angular scale binaries, Pi 
Andromedae, Theta Aquilae, Beta Aurigae, 113 Herculis, Beta Trianguli, 
and Delta Trianguli. This task involved some recalibration of data, and 
extensive Monte-Carlo simulations for the determination of parameter 
uncertainties. I started a paper on these stars, which, when published, 
will almost exhaust the supply of publishable orbits from the Mark III 
interferometer. 

My paper on "Four years of astrometric measurements with the Mark III 
optical interferometer" was accepted by AJ with minor modifications. 

Most of February and March was spent on writing code for the visibility 
averaging and calibration program for the NPOI, CHAMELEON. I also wrote 
a small program to transfer Mark III data into the new format in order 
to have some data to play with. As of the end of the first quarter of 
1994, we can read the visibility data, plot and edit it. Next tasks will 
involve the astrometric dispersion corrections for the delays, the 
averaging and calibration of the data. The code consists of a mixture of 
PV-Wave scripts and C-subroutines called from within the PV-Wave 
environment. 

From February 21 to 24, I went to Montreal in order to get my new IAP-66 
form validated, a new visa, and my I-94 extended for the duration of 
status.