This is probable 'prediscovery' image of Comet C/2005 T4 made on October 18.372, 2005 UT (centre of exposure). 3 x 3 minute exposure using 300D (IR Block filter removed) and 100mm f2.8 lens operating at ISO200. Some cloud interference. The measured position is RA 16h 18m 49s DEC -8d 11' 12" +/- 15" and brightness mag 12.0. My Location at Thornlands, QLD, is -27.55 S, 153.267 E