MACHO Archive


The MACHO project (Massive Compact Halo Objects) ran from June 1992 to December 1999, during which over 100,000 two-colour images were taken with the 50-inch Mount Stromlo Great Melbourne Telescope. These images yeilded light curves in two colours for over eight million stars in the Large Magellanic Cloud, and over ten million in the bulge of the Milky Way.

This entire dataset comprisingimages and light curves, is now hosted by the Australian Partnership for Advanced Computing (APAC) Mass Data Storage System, located on the Australian National University (ANU) campus. Staff at the ANU Supercomputing Facility have implemented a searchable web-interface to this data, allowing images and light curves to be retrieved in real time - see
As part of the Australian Virtual Observatory effort, ANU Supercomputer Facility staff are now engaged in bringing the MACHO resources up to emerging international Virtual Observatory standards. Current topics of investigation include use of the VOTable metadata standard, and work towards participation in upcoming Aus-VO demonstration projects. We are also working towards adding the MACHO data set to the San Diego Supercomputer Center (SDSC)Storage Resource Broker (SRB) multinational data grid.

Experience gained with the MACHO project data will be applied to the upcoming Stromlo Southern Sky Survey project.

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