[Dizzy-Dick]

When I take it apart, I leave the secondary mirror (the little one that is about 4" dia.) in place. If the tube is handled with care, it usually stays in place. When the primary (16" dia.) mirror is removed, it goes back together exactly as it was. (It can only go together one way) Therefore, it may not need to be collimated. When I went to one star party, it must have got bumped, had to adjust the secondary. Took about 20 to 30 minutes, if my memory serves me. I had no laser, so just tried to get my eyeball centered in the secondary. Seemed to work. It is a lot more forgiving than my smaller scopes.