Quote:
Originally Posted by Shiraz
- in fact AO is likely to increase the star sizes due to seeing - they will probably be round, but bigger.
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I have both AO-X and A0-8T systems...the latter being more user friendly due the placement of the guide sensor.
But this has never been my experience when using an AO.
Stars always have better FWHM's and intensities when I can get a 5-10 Hz guide star, compared to guiding via the mount.
I suspect there is a statistical process happening, as with mount corrections, you are moving the system back to a datum up to several seconds after an unwanted displacement. With AO you can cut that back to a 1/10th of a second.
But being a tip-tilt system, AO doesn't help with, as I call it "fuzz ball" seeing. Deformable optics for wavefront correction would then be required.....but, if the last 20 years is anything to go by, never say never...
