Ian Bond (University of Auckland, New Zealand)
The NZ/Japan MOA Collaboration is currently carrying out observations using a 24 megapixel CCD camera at the Mt John University Observatory in New Zealand. Up to 7 GB of digital images are collected per night. An on-line analysis system is being implemented to provide alerts of optical transient events in progress. The online system uses image subtraction analysis in crowded fields, and it allows the detection of earth-like extra-solar planets in high-magnification gravitational microlensing events. The data analysis system will be described. An example of image subtraction analysis of the detection of a planetary system by microlensing (Rhie et al, astro-ph/9905151) will be described, and also observations of optical counterparts of gamma ray bursts.