Unfortunately, ASIAIR does not support dark frames for guiding -- I think they are afraid that it will confuse the "Simple as 1,2,3" crowd.
Dark frames might solve your problem (i.e., deriving bad pixel map information from it).
In the meantime, you may have to resort to using single star guiding with your camera. On ASIAIR, start the image capture, then tap on a real star before initiating the guiding (the icon with the "target" image). ASIAIR will then use that single star for guiding.
For multi-star guiding, one thing that might help is to use Bin2 mode (in Guide Camera settings). That should drop even hot pixels by a factor of 4. That may be sufficient to make things work. You can test out if Bin2 will reduce the intensity of the hot pixel in the daytime by checking the dark frames. ASIAIR may still pick a point with ADU of 64 (out of 255) as a star -- but if you have enough real stars with above 128 ADU, they should be able to swamp out the centroid from the hot pixel.
Chen
