The funny detail here is that, compared to my recent photos, this  is pretty much the first time I tried the setup, and if my memory serves, without the reducer, which turned out to be a key addition in the current setup. EQ3, Lunt LS60T Ha B600, ASI 178MM (cooled). Also, at this moment in time, basically setting up the ersatz-obsi, there was little to no control devices, manual focus, no cooling on the camera etc. So in a way, this is a first light event. Also, digging out these old photos is aided by a librarian-script I wrote, because why not, and what else to do, asked the philosopher.