Hi,

Guiding rate 1x
RA and DEC: start with standard 100% and run guiding, if you see that the correction overshoot, reduce until the correction stop almost at the 0-line without overshooting.
The aggressiveness varies depending to he quality of your polar alingnment and weather conditions.
I suggest to do this every night before you set up a sequence.

More important ist to set the focal length properly, for to get the exact one, use your guiding cam as main, take a picture and platesolve, Asiair show you the focal length.
Insert this value into the guiding section.
Don’t forget to do the same again with the main cam, because Asiair insert the value measured automatically as focal lenght in the main camera section
Also keep the trigger time low, 1-2 sec. is enough.
In guiding section you also can change the binning, sometimes you get better results with BIN2.

Important is also the time of the correction rate, I use as standard 2000 for both axis and for all mounts and scopes.
Never set this above the trigger time selected.

The calibration steps should be set with caution, Asiair should not loose the star while calibrating, start with 2000.
Good is if for each calibration if it don’t need more than 6 moves until it went back.
As mentioned, never loose the star in the square.

I use mostly an OAG, but the workflow is the same for a guiding scope.

Btw, what I wrote is for all mounts not only for Ioptron.

OolXx5MA standard default guide rate for all iOptron mounts is 0.5x…. Not 1.0x
iOptron Commander and the hand controller defaults to this setting and is the norm when using Phd2 as well.
Based on your guide scope and guide camera your calibration step size will be more accurate at about 1400ms ( can be verified using Phd2 brain tab by entering FL and pixel size 2.9uM) and set max durations at 2000ms and aggressions at 50% to start using 2s guide exposures and check for overshoots and only increase aggressions if it does not correct enough. Most Non iOptron Gem mounts are 1x guide rate but the iOptons are all 0.5x standard. It is stated in the iOptron manual if you need to verify that you can change it from 0.1x to 1.1x if you want to. I have owned an iOptron 45, 28 and now a AM5 which is also 0.5x default. Just check in your hand controller to what it defaults back to if you reset it to see. Cheers!