I know it is 100 in Victoria but that includes M76, M106, M51 and M38 that are all very low. In FNQ it is a different story. The northern most Messiers are M81 and 82 at about +69deg and Townsville is -19deg and Weipa is at -12deg so they would rise to 2deg above the horizon in Townsville and a whopping 9deg above at Weipa.
So all of them are visible theoretically in Oz!
Malcolm
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