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. Such conditions can last for hours at a time.

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

** NB: My telescope suffers from a small amount of astigmatism, so aberration free, the true FWHM of the sub frame above is likely closer to 1.2"