On Thu, Jun 13, 2024 at 11:03 PM, Paul Kanevsky wrote:
Your guide star is overexposed and saturates the sensor pixels. Try shorter exposures, no binning, or find a dimmer star.
An easier way is to tell PEMPro not to pick such over-exposed stars. Set maximum level to 20000 for your sensor to avoid picking saturated or nearly-saturated stars (32767 adu in your case):
Paul Kanevsky