[Varangian (John)]

Hi, this question probably gets beaten around a bit but I couldn't find the specifics I wanted when I did a search.

I have just laser collimated my 200mm Newtonian by adjusting the secondary mirror. I unscrewed the back of the scope and looked around for where I might adjust the primary mirror but that looked fairly fixed, so I unscrewed my secondary mirror and moved it around until it was 'approximately' within the small black circle located in the middle of my primary mirror. I have done this before and have been happy with where I can get it.

My question is how close to the bullseye on my laser collimator/circle on the primary mirror do I need to get? The red dot is more in the middle of the black circle of the primary mirror than out of it and I am about 3mm away from the bullseye on the collimator. I'm pretty happy with it, I'm just using it for observation and it is far closer to the middle of the circle/bullseye than when I started (about 15mm out initially).

Any feedback appreciated. Thanks, John.