The Synthesis Telescope at the Dominion Radio Astrophysical Observatory
  We describe an aperture synthesis radio telescope optimized for studies of the Galactic interstellar medium (ISM), providing the ability to image extended structures with high angular resolution over wide fields. The telescope produces images of atomic hydrogen emission using the 21-cm HI spectral line, and, simultaneously, continuum emission in two bands centred at 1420 MHz and 408 MHz, including linearly polarized emission at 1420 MHz, with synthesized beams of 1 degree and 3.4 degrees at the respective frequencies. 
T. L. Landecker, P. E. Dewdney, T. A. Burgess, A. D. Gray, L. A.   Higgs, A. P. Hoffmann, G. J. Hovey, D. R. Karpa, J. D. La...