Hello,
I tried to collimate my scope because it was not perfectly aligned anymore (I have been using it almost every day lately, in and out of the box, then on the balcony etc.). I had no problem at all aligning the primary mirror, but the secondary mirror seems to be a little bit trickier to align (with the red dot of the laser collimator perfectly at the center of the primary mirror - there is a tiny circle in the middle of the primary mirror to check and the red dot seems to always bit just outside or on the border of the circle). I have noticed that if I slightly tilt the secondary mirror upwards (towards me) the red dot does hit the centre, but it doesn't seem to last very long, maybe just for a viewing.
My question is - do you know exactly what I should do to make this most permanent? I guess maybe a screw is too loose, but I don't know which one? It is probably difficult to know without seeing or knowing the scope, but maybe those of you who own a Skywatcher Heritage 5" know.
PS: Searching for some detailed info about my scope's collimation on the net I have just found this thread and I think post #5 could also be a problem for me. It doesn't look like that angle is perfectly 90 degrees in my telescope either...
http://stargazerslounge.com/topic/19...or-mount-help/