BRITE-Constellation (where BRITE stands for BRIght Target Explorer) is an international nanosatellite mission to monitor photometrically, in two colours, brightness and temperature variations of stars brighter than V = 4. The current mission design consists of three pairs of 7 kg nanosats from Austria, Canada and Poland carrying optical telescopes and CCDs. One instrument in each pair is equipped with a blue filter; the other, a red filter. The first two nanosats are UNIBRITE, designed and built by University of Toronto Institute for Aerospace Studies - Space Flight Laboratory and its twin, BRITE-Austria, built by the Technical University Graz with support of UTIAS-SFL. They were launched on 25 February 2013 by the Indian Space Agency under contract to the Canadian Space Agency into a low-Earth dusk-dawn polar orbit.
@article{arxiv.1309.5531,
title = {BRITE-Constellation: Nanosatellites for Precision Photometry of Bright Stars},
author = {W. W. Weiss and A. F. J. Moffat and A. Schwarzenberg-Czerny and O. F. Koudelka and C. C. Grant and R. E. Zee and R. Kuschnig and St. Mochnacki and S. M. Rucinski and J. M. Matthews and P. Orleanski and A. Pamyatnykh and A. Pigulski and J. Alves and M. Guedel and G. Handler and G. A. Wade and A. L. Scholtz},
journal= {arXiv preprint arXiv:1309.5531},
year = {2015}
}