The Global 3mm VLBI Array (GMVA)

by Jonathan Romney last modified May 29, 2018

The GMVA observes at 3mm wavelength, using 8 VLBA stations, GBT, Effelsberg, Pico Veleta, Onsala, Metsaehovi, Yebes, and Korean VLBI Network (KVN) telescopes. (The VLBA stations in high-humidity locations at HN and SC are not equipped with 3mm receivers.)

The European part of the GMVA is coordinated by the Max-Planck-Institut für Radioastronomie (MPIfR), which hosts the main GMVA website.  Proposal deadlines for the GMVA coincide with those for the VLBA alone, as described in Section 15.  Observations are block-scheduled in two sessions per year, typically in April-May and September-October, and correlated at the MPIfR in Bonn.

In GMVA observations, all telescopes operate at their highest possible bandwidth.  Currently, this is a 2 Gbps data rate in all cases except at the KVN telescopes, which operate in a compatible 1 Gbps mode.