My mate came around last night with his Cheshire(?) collimator to help me collimate my telescope. Between his collimator and my laser collimator, we were able to get it pretty close. But the dark circle (I think this is the secondary mirror) is slightly off center.
What my mate does to adjust his is to adjust the spider adjustment screws on the outside of the OTA. Is that method OK or is it a no-no?
I have watched
http://www.andysshotglass.com/Collimating.html a few times to get the idea.
I don't have a collimation EP, just the laser collimator.
Sorry if what I've written above sounds confusing. I am trying to write from memory as what I saw.