The dovetail adapter that I ordered for the C8 that I've decided to buy (Super C8+, I think), came last night. So I got it de-forked and mounted on my SQ-G. Got it balanced and put it out to cool down, then waited to see if it would clear.
It did and here is the only image that I dare show (SSAG). I don't have a focus mask yet and trying to figure out focus without one, at long focal length, is not something I'm accustomed to. I also am going to have to re-figure out my settings, as the banding is back in a major way!
I took some video with the SPC900, but they are worse. I must not have had the focus as good as when I did this one. Hopefully I'll get another opportunity soon and hopefully the focus mask will get here sooner rather than later, along with a nice big dew heater strip! I was amazed (probably shouldn't have been) at how fast it frosted up. In hindsight, I think it was frosting up before I realized it, because I kept having to tweak the gain up just before I quit.
I have a ton of stuff to learn with this new scope! I also have to overcome my collimation phobia! I never could figure it out on a Newtonian, but this seems much simpler, albeit I've only done a coarse adjustment so far. I don't think that this is a 'Halley Era' dud, but I don't know enough to say so unequivocally yet.
I think I will be able to make some decent images with it.