Hi Peter,
My personal opinion is the web has over complicated the whole collimation of a Newtonian, with one thread after another about it. Some go into so much depth it makes me laugh.
With your ex newt, and you gave me a good tool to start with, but I also purchased a astro-systems Barlowed laser collimator. I have found this device so easy to use its not funny.
What I found ridiculous was at so many nights out viewing with others and so many observers blamed one thing or another on why they could not get a sharp image. When it all just came down to simple collimation.
And there comments where
"but I read how to do it on the net but all it did was confuse me"
I must admit i confused myself at times
But really its not hard even in a SCT.
You seem to have got it and found hey it really is easy
