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Old 17-05-2015, 11:20 PM
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Joshua Bunn (Joshua)
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Joshua Bunn is offline
 
Join Date: Oct 2011
Location: Albany, Western Australia
Posts: 1,486
Quote:
Originally Posted by E_ri_k View Post
Hi, does anyone know how to adjust the centre position on the secondary mirror in the GSO RC's? Have a look at the photos. To me it only seems like these screws would allow for the assembly to be removed, not adjusted?

Any thoughts?
Erik
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?

Quote:
Originally Posted by Paul Haese View Post
It might be the case Josh that this secondary is not centred properly but I am more inclined to think that a centring ring is what is needed here.
You may be right Paul.
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