The longest session yet with the Sony camera - 15 shots of 6 minutes Ha filter (12nm) and the same RGB, ISO 3200 with the JTW Astronomy modified Sony A7s and Takahashi E-130D.
Yes, I know, noisy as heck, pretty hard when the ambient was up around 28c with an uncooled cam. Pleased at the details revealed at the longer exposures though.
Higher res here