FWHM < 1.5"

On the regular nights, of very good seeing - Raw untouched sub frames, like the above, straight from the camera, look like this on the screen.
FWHM measurements are taken using MaximDL.

The steadiest skies on Earth enjoy regular seeing of under 1.0" so 1.5" is kinda average in comparison...but for a continent like Australia,
without any high mountains either in our deserts, or rising off shore out of the ocean, realistically, this is about as good as it gets!

The final image stack of the the above sub frames, with just basic processing applied, is here: https://pbase.com/image/173839320/original