I have a new ASI185MC and it works with the CS lens but when I put on the M42-1.25″ T-Mount the image goes black - Day or Night shots.
I'm sure I'm doing something wrong or have setting incorrect but I'll be damned if I can figure it out.
Thanks!
just increase the exposure or gain
you will see some brightness and adjust focus until image is clear
our quick start guide maybe useful for you
https://astronomy-imaging-camera.com/manuals/QuickGuide.pdf