Sorry, took a while to reply.
Yes, it works. But not as well (IMO) as the homemade one of Peter's.
I was using it on both 2350mm FL SCT and 1200mm FL Newt. Had to place the artificial stars quite a long way away due to min focus distances - maybe 60-100m? At that distance I was having to use the biggest hole in the art star for my eyes to pick up airy disk etc.
So in short, yes it works. And I won't be making my own one. But if I didn't have one, I'd prefer to give Peter a carton of beer and have him make me one
