I tried to do an 1s exposure. The QHY log shows the following:
2017-08-23 21:24:58.796 LOG_ALARM ----------------- log4z thread started! ---------------------------- 2017-08-23 21:24:58.797 LOG_ALARM logger id=0 key=Main name=indi_qhy_ccd path=/tmp/ level=1 display=1 2017-08-23 21:25:14.957 LOG_DEBUG ScanQHYCCD (qhyccd.cpp):2202 2017-08-23 21:25:14.957 LOG_DEBUG ScanQHYCCD do not ScanQHYCCD repeatedly numdev=1 (qhyccd.cpp):2206 2017-08-23 21:25:14.957 LOG_DEBUG ~QHY5RII_M (qhy5rii_m.cpp):104 2017-08-23 21:25:14.957 LOG_DEBUG ~QHY5IIBASE (qhy5iibase.cpp):76
21:25:15:QHY CCD QHY5RII-C-9137d: Connected to QHY5RII-C-9137d7e0f33c7355. 21:25:15:Camera connected 21:25:15:Camera frame x=0 y=0 width=728 height=512 21:25:16:Camera cooler False 21:25:17:Camera cooler False 21:25:18:QHY CCD QHY5RII-C-9137d: Set BlobMode CCD1