I've lived here (Oahu) for many years and while there may be places where you can find what you are looking for on this island, and others may chime in, I'd suggest that if you're serious and can possibly afford to schedule a trip to the Big Island of Hawaii, that you visit at least the Volcano area at night. Also, though it would involve more planning and logistics, the summit of Mauna Kea, where the telescopes are located, would give you images that are unparalleled.