|
I haven't tried those but I have used Hotech adapters. If you drill your existing focuser/extension tubes with two more grab screws so you have three in total spaced 120 degrees you'll always be square and centered provided your tubes are a reasonably tight fit. I've found this to be the easiest mod and most practical thing to use for repeatability. There are a lot of things you need to keep in mind to have your light path centered and adapters are only a part of it.
|