Quote:
Originally Posted by Paul Haese
What size RC do you have? If you have a 10" and above you can buy a centring ring which fits on the back of the scope. It will centre the sensor to the existing optical line and negate the need for trying to do what you are discussing.
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Hi Paul, its a 10" The problem is when I rotate the focuser collimation is lost. Long story short but I have only now been able to see properly through my TAK scope, and the spider assembly is off centre.
Wont the scope still be out of alignment, even with this centring ring?
Quote:
Originally Posted by Joshua Bunn
Put a laser in the focuser and see if it hits the secondary center dot. Be sure to rotate the laser somehow while keeping it collimated with the focuser. Then you will know if it's not centered, if you don't already. This may not be such a good idea though it your focuser isn't square to the mechanical axis of the scope, something tells me the focuser tips and tilts with the collimation of the primary, but this can be adjusted separately.... is this correct?
You may be right Paul.
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Thanks Joshua, sold my laser hehe! I can quite clearly see through the TAK collimation scope that the secondary is not sitting right. Plus when I rotate the focuser the centre spot shifts quite considerably off centre, then back again.