22/07/2026
Each image is about two hours of exposure through my imaging telescope — and while that one stays busy with the camera attached, guests are welcome to something even better for looking: on clear nights we set up our 10-inch Dobsonian, which gathers half again as much light and turns these clusters into swarms of stars you can see with your own eye. The southern sky is one of the Waitaki's quiet treasures — on a moonless night here, you can see the Milky Way from horizon to horizon.Midwinter is prime season for stargazing here in Oamaru — the nights are long and properly dark — and this past week of clear skies let me point the telescope at four of my favourite star clusters. All were captured over the last few nights, right here in the Waitaki's dark skies.
The big misty ball is Omega Centauri, the largest star cluster in the entire sky: around ten million stars, and it passes almost directly overhead here. Astronomers believe it's actually the surviving heart of a small galaxy our Milky Way swallowed long ago. The two golden swarms are M22 and M4 — M4 is the closest cluster of its kind to Earth, and is home to a planet nearly 13 billion years old, one of the oldest known. And the sparkly one is the Jewel Box, a young cluster in the Southern Cross — blue-white diamonds with a single ruby-orange star set in the middle.