Monthly report for March 2001 by Christian A. Hummel:

The paper on NPOI observations of limb-darkened stellar disks
by M. Wittkowski, on which C. Hummel is a co-author, has been
accepted by A&A provided some significant changes will be made
in some sections. Hummel provided input for answers regarding
some of the questions the referee had. 

Hummel worked on the common data format for optical interferometry
data which is based on FITS, and in the course of this further
improved and tested the FITS writer software in OYSTER. 

Hummel reduced several nights of astrometry observations. He
wrote code which utilizes the total astrometric constant term
solutions to separate station and delay line based contributions
for updating the configuration files. The  astrometry observing
list is based on a new script which automatically selects bright
single stars and optimizes the uniformity of the sky coverage.