m44dsw I need to be around 0.8s, however when I type in 0.8 or even select 0.5 and click OK then it reverts back to Auto.
To manually adjust exposure for taking flat frames, simply use AutoRun to take them. Select "Flat" in AutoRun and it will use the right name for the files.
You can also change the AutoRun Target name, for example, name the target "FSQ-85-ASI2600-HEUIB", so you can reuse it in the future for non-critical use.
Chen