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Yup a rare night with very, very, steady seeing at Maroubra, the moons of Saturn simply hanging there showing little diffraction disks. We could pump magnification to the max.
Visibly steady here at a Killara too, where I am among semi forest and low density housing with gardens so no significant heat sources nearby.
I know you guys think it’s the jet stream affecting you but I’m certain the real cause is much much closer and local to your vicinity - almost certainly thermals from houses with dark tile roofs that warmed up in the afternoon sun and giving off heat well into the night, and poorly insulated buildings - especially offices and apartment blocks - with central heating and ventilation systems.
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