|
I found the adjustment of the secondary to be easily the hardest part of collimation. Adjusting the primary is a piece of cake compared to this.
The only problem with the Andrews collimation piece is that it has a lot of slop in it when you put it in the 1.25" adapter. So for example if you collimate it spot on, then undo the set screw and turn the collimation piece 90 degrees, do the screw back up, I found that it looked out again. I overcame this by machining up my own adaptor that fits the collimation piece spot on. It doesnt even need a set screw because the fit is very snug. (1 thou)
|