I’ve had several sessions with this TSRCKOLLI and have mixed feelings about it.
1. I can’t fully insert it into my 2” Moonlite focusers.
2. I can’t clearly identify the primary mirror shadow.
But I am happy to report a cheap and simple daylight method that looks a lot better.
An article in the British Astro Org web site entitled Kitchen table collimation ....”
http://articles.adsabs.harvard.edu/p...BAA..125..281S
looks to me to be even more accurate than the artificial star technique. I plan to try it this weekend.
Peter