So I got a few test images with the new triplet early in the morning the other weekend. Couldn't get the spacing quite right, it's about 1.5mm off cause the thread is far too long on the reducer and I cant get my spacers to screw all the way down to the bottom of the thread. And I also have some flex between the camera and the adaptor... possibly because my camera is too heavy (5D III with battery grip and 2 batteries is a bit to hang off an EOS adaptor) or possibly because the adaptor is a bit low on quality, not that I cheaped out with it... but alas who knows. Eventually Ill get an astro cam and it'll be all threaded anyway so I might not even worry about that too much for now.
Anyway, this is 20x 40sec (sky limited...) at 1600iso f4.74 379.2mm with Canon 5DIII
The low res doesn't show much detail so here's the astrobin link:
https://www.astrobin.com/311871/0/