QHY has released an updated camera driver that is compatible with ICameraV3 (ASCOM 6.5 SP1) that allows an ASCOM 6.5 compliant application to now set both the gain and offset values on CMOS cameras. I have been testing the update with my QHY163M camera and both gain and offset values are being set correctly.
The updated camera driver, 21.01.18.13, is the replacement for the previous version 20.06.26.1. It is available for download via the QHY “Update Check” utility but it does not look like the web site download page had been updated.
Charlie