Australian retail law deems that a faulty item may be returned to the place of purchase for assessment. If the place of purchase finds manufacturing fault in the product, then it may be repaired or replaced or a refund can be issued. Note that it is at the retailers discretion whether or not a refund gets issued, not the consumers.
Its quite normal for you to have to take/send a product back to the importer/ manufacturer here. After all, they are the ones likely to need to repair or replace your item. Often if you take it back to the place of purchase, they will need to charge you freight back to the manufacturer anyways... so better off you doing it.
Just call Tasco, its perfectly reasonable that you would ring and check on the progress of your item. However, I have noted that there is an advertisement on the right hand side of the page, from tasco...requiring a telescope technician, so maybe thats why yours is taking a little while
