Monthly report for January 2001 by Christian A. Hummel:

Hummel attended the 197th meeting of the AAS in San Diego and presented
a poster on "Astrometry with NPOI".

Hummel fabricated five posters for the upcoming tours of NPOI. They cover
results from astrometry (3) and binaries (2).

Hummel created an astrometry observing list for this season and 
reduced three astrometry nights with NPOI, and one white-light test.
He successfully tested his dispersion correction code on archival data
of stars of magnitude 5.5 and 5.8.

Hummel wrote software to convert closure phase data to baseline phases as part
of the preparations of the NPOI data reduction software for six-station
operations. He tested the result using the radio-VLA/VLBI "Difmap" software.