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Which component is causing this?
When I alter the altitude of my scope through it's entire range of movement the returning beam from the laser collimator "drifts" across the centre alignment hole from 1 side to the other. It doesn't move much but is certainly easily seen and repeatable.
What would cause this?
I think I've ruled out primary mirror movement within its cell which leaves movement in the secondary holder (seems quite rigid), or sag in the whole top end due to a lack of support from the trusses. I am really hoping it's not this.
Can anyone think of any other causes or solutions to this prob?
Cheers
Steve
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