The benefit of simultaneous seven-filter imaging: 10 years of GROND observations

Abstract

A variety of scientific results have been achieved over the last 10 years with the GROND simultaneous 7-channel imager at the 2.2 m telescope of the Max-Planck Society at ESO/La Silla. While designed primarily for rapid observations of gamma-ray burst afterglows, the combination of simultaneous imaging in the Sloan g′r′i′z′ and near-infrared JHK s bands at a medium-sized (2.2 m) telescope and the very flexible scheduling possibility has resulted in an extensive use for many other astrophysical research topics, from exoplanets and accreting binaries to galaxies and quasars.