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Hi Jowel,
Nope. Doesnt change, just the constellations visible change during the year. The tilt of the earth and the latitude of Sydney and the Earth getting in the way means that you can only see as far north as the horizon.
Most of the time you can only see as far north as the trees, houses or hills dictate from where you are viewing. For example, there is only about 1-2 weeks a year where I can see Andromeda Galaxy from my front step (which faces north) when it is between the two storey houses across the street and even then, its pretty low down. Go out west where the land is flat and the view to the horizon is unobstructed and you will see it higher and also more stars which are further north.
The "higher" you go up Australia in latitude (Brisbane, Townsville, Darwin etc) the more of the Northern sky you can see, but inversely, the less of the Southern sky you can see. Thems the breaks....
Sydney has a pretty good mix of the ecliptic (zodiac constellations and the path of the moon and planets) as well as an almost complete view of the southern gems around the South Celestial Pole. The time of the year dictates what orientation these take and what is visible during the night time hours.
Cheers
Chris
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