Not to be too harsh on the shop you brought your scope from BUT certainly in victoria the fair trading act or whatever you call it explicitly states that you have a right to expect the product you purchased to do what it is expected to do and if it is faulty at time of purchase
... the trader is responsible
.... .. its up to him and him alone to take it to the next level in this case his provider celestron......so if it dont work its his/ her problem PERIOD...... of course one will catch more flies with honey than vinegar so if it goes that far be nice first.
