I went thru a couple weeks of collimating a while back. I am pretty sure my optics are good. I used a cheap chesire, but it never got perfectly aligned(cross hairs), but pretty close. Some reason, if i aligned it correctly, I'd always end up with mis-alignment of the concentrics (even the primary mirror was clipped).
Probaby due to the cheap collimator. I don't know for sure though.
Since I can't afford much, I still have a moderate price range of a collimator in mind. It the Zhumell 1.25" Laser Collimator for $50 on Amazon.
On another site, the description said that "do not adjust the adjustment screws on it, or it may not work right". It says it comes already aligned. One customer review said that it was way off when he recieved it.
Thing is, I don't like messing with things like this. I had a cheap laser collimator that came with my used Orion XT10i and i stripped the screw on it.
I don't want to do that with something more expensive. So I'm thinking, if it isnt' right, send it back until they give me an adjusted one. I don't know how dependable that will be since most come unadjusted.
What do you think?