I had a post about this some time ago. I had determined then that it was only the outside ring moving and everything was fine. Now I find that the whole secondary spins. If you look at the pics I’ve added I marked one up as:
A - outer ring
B - secondary
C - looks like some kind of gasket
I also know from the last time that there is a set screw under the outer ring.
The whole thing is spinning and the only way I can get the outer ring off is to get my fingers to grip the portion of the secondary (B). A friend has lent me a Hotech SCA collimator to check collimation while the weather is bad. I do not want to proceed until I understand if this is a major issue or not. Here is what I’d like to understand:
1. Is it a problem for this to be able to spin?
2. If so, how do I tighten it? Is that what the set screw is for?
3. If I need to tighten it, is there a certain pattern the screws should be in, or does the text get set as horizontal?
A side issue is that the Hotech video on YouTube has a step where they say to remove the secondary. This is not indicated in the Hotech written instructions so I’m wondering if this step is considered necessary? If so, Is this accomplished by loosing the set screw?
Any info to help me understand this is appreciated.