The Dome has done four journey', one from Morayfield to Mapleton with escort as wide load
One from Mapleton to Beerburrum with wide load escort.
One from Beerburrum to Kilkoy with I presume an escort
and from Kilkoy to it's present location

so it has done a bit of travel.
as you say it is up to the "Ten Chain Hill Gang"

if they want to spend the Time, Money, and effort into getting the observatory up and running.