So I have had far too much fun tonight..
Have spent a few hours on collimation tonight and I think its an improvement on last time.
I believe I still have to faff with the primary as it looks like the right hand side is a little bit off. But I will get to that when the moon is in play as after tonights fun I'd like to get an image so have framed one a tad over to the left ;-) Bit nervous with the primary as it is going to shift a lot with the weight thats on it if I want to try collimating this with the imaging setup attached and I keep seeing threads saying you should not try this at home..paah.
Attached are the following
1) Out of focus star at center of frame collimated with the help of Als widget ( I think there is a little bit more to go here but when I have caught breath and am ready to play with the primary I will go back to secondary)
2) Composite of the corners and centre of FOV after collimating with a focus mask in place to show adjustments to primary I think are still needed. Star at each corner and one dead centre.
3) Full frame NGC104 showing what I think is Tilt off to the right.
NGC104 is a 360sec single sub at ISO400 taken with a Canon 60a so this should help assess if there are any other issues (thanks Paul)
Per advice in this thread, collimating this RC8 takes some patience but once I sort out the primary I think its going to be a good little scope
Any additional comments appreciated