dmsummers wrote: Educated guess, but since the ZWO site does a side-by-side comparison of the 533 MC pro to the 183MC pro, and knowing that their driver supports most if not all of their cameras, I don't see anything in the specs that would suggest that the existing ZWO camera driver in KStars/Ekos wouldn't drive it correctly. I think the issue at the moment is that Pi4, USB3.0, and ZWO USB3.0 capable cameras don't play well with Pi4. The Pi4 hotspot is locking up when connecting to a USB3.0 port (see other posts). Most of us who have ZWO 3.0 cams are using the USB2.0 ports on our Pi4s until this issue gets resolved. This is definitely not ideal, and we all wait anxiously for that issue to be solved. The only other issue is that it seems that for the higher resolution cams, there's either a memory leak or thread sync issue that is affecting use of preview and FITS viewer (again, see other posts). Otherwise, these OSC cams work well under KStars/Ekos. I have an ASI183MC Pro and I like it.