I can not work properly together my cameras asi 120mm and ASI 1600mm. In particular with "Prism10" the two ceras are not recognized in directhow (video stream mode). In picture-by-picture mode it only works if I use the native driver for the ASI 1600 and the ASCOM driver for the 120. Thank you for telling me how to use both cameras in frame-by-frame and video-stream mode. .
I use a PC (intel i7) with windows 8.1 and the latest versions of your drivers downloaded on your site.
Thank you very much in advance for your answer.
Kind regards from France.
Etienne Richard