Monthly report for July 1999 by Christian A. Hummel:

Hummel began interactive NPOI raw data analysis using the new HDS-formatted
files output by the CONSTRICTOR averaging software. He produced images of
fringes which show their motion and also the dispersion between channels.

Hummel completed the analysis of the joint VLBA/NPOI observations of the
radio binary HR5110 and determined a position of this star relative to a 
Hipparcos calibrator (Eta UMa) with a (preliminary) precision of 20 mas. 
He compared these results to Hipparcos and VLBA (the latter provided
by D. Boboltz).