Australian square kilometre array pathfinder: I. system description by Hotan, AW, Bunton, JD, Chippendale, AP, Whiting, M, Tuthill, J, Moss, VA, McConnell, D, Amy, SW, Huynh, MT, Allison, JR, Anderson, CS, Bannister, KW, Bastholm, E, Beresford, R, Bock, DC-J, Bolton, R, Chapman, JM, Chow, K, Collier, JD, Cooray, FR, Cornwell, TJ, Diamond, PJ, Edwards, PG, Feain, IJ, Franzen, TMO, George, D, Gupta, N, Hampson, GA, Harvey-Smith, L, Hayman, DB, Heywood, I, Jacka, C, Jackson, CA, Jackson, S, Jeganathan, K, Johnston, S, Kesteven, M, Kleiner, D, Koribalski, BS, Lee-Waddell, K, Lenc, E, Lensson, ES, Mackay, S, Mahony, EK, McClure-Griffiths, NM, McConigley, R, Mirtschin, P, Ng, AK, Norris, RP, Et al.