Readings conducted on the island by Xyst Consulting have confirmed the sky quality is suitable for achieving dark sky status, and is comparable with current conditions on Great Barrier Island.
In order to achieve Dark Sky Sanctuary status, the island must use LED street lights of no higher than 3000k, which the Southland District Council is addressing with their LED replacement programme.
Along with the testing, Venture Southland also polled residents to gather their views on the subject.
Support for the initiative was strong, with 79 of the 90 people surveyed supporting the plans.
Community leaders on Stewart Island also expressed their support for the proposal.