In wake of the quake, no damage was reported at the Gemini North telescope either. "No ill effects from the quake that we know of," Andy Adamson, Gemini's Associate Director Operations, said in an email to Discovery News. "It wasn't large on the scale of things."
Hawaii is no stranger to earthquakes and a magnitude-4.5 tremor is more than manageable.
Like Keck, Gemini will be closed through the night and kept in a safe state while Iselle passes over Hawaii and the Gemini North headquarters based in Hilo (on the East coast of the island) will be closed through Friday. "The storm is still category 1 and still looks like a direct hit on Hilo," said Adamson. "I think a power outage on the summit is a possibility."
Adamson pointed out that even after the storm, "there is a chance of fog and the winds are likely to be high," therefore any observations would likely be curtailed.
As Hurricane Julio approaches, the Gemini team are expecting further inclement weather and although they wont be expecting to be observing in the run-up to Julio, "we're not calling the telescope formally closed yet," he added.