At the beginning of 1997, I went to Sydney, Australia, from January 9 to 18
in order to attend the IAU Symposium No. 189 on "Fundamental stellar 
properties: the interaction of observation and theory". I presented a poster
on "Imaging and modeling of spectroscopic binaries by long baseline optical 
interferometry". I prepared and submitted a 3-page contribution to the
proceedings.

After I returned from Sydney, I added an option to the raw data averaging
program CONSTRICTOR to replace the measured raw bin counts with simulated
Poisson noise. This enabled me to perform a "front-to-end" test of the error 
propagation in CONSTRICTOR/CHAMELEON/AMOEBA. One bug surfaced and was fixed.

My paper "The radio jet of 0153+744", submitted to Astronomy & Astrophysics,
was accepted and I mailed the corresponding files to the publisher. A camera
ready version was send to Bonn to manufacture preprints.

I re-analyzed all 7 Mizar A maps after an improved bias correction suggested
by D. Mozurkewich was implemented in CONSTRICTOR. All relevant raw data files
were re-processed. The paper on Mizar A was submitted by J. Armstrong.

I compiled a new list of stellar diameters based on the Bright Star Catalogue.
Diameters were predicted from the (R-I) color and the visual magnitude.
Values for stars measured by D. Mozurkewich were included, as well as diameters
determined using the infrared flux method (Blackwell et al.). For all stars
I computed limb darkening coefficients with model atmospheres tabulated by
Van Hamme (Univ. of Florida).

I implemented limb darkening computation in AMOEBA. I continued data reduction
for more than 20 nights of data from NPOI. Some data had to re-analyzed due to
further changes to CONSTRICTOR. I have taken over responsibility for scheduling
observations with NPOI.

At the end of the reporting period, the Interferometry Group moved to a new
office building. This move took several days.