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I have been thinking about those springs I added.
It looks like other mirror cell designs that actually lock the mirror once adjusted are the best
but they are more difficult to collimate.
Maybe the springs could be replaced with a rod and a ball joint
to lock the mirror but still allow normal collimation adjustment? -
just lock it after setting the collimation?
The problem is that the whole telescope can be modelled as a set of springs:
the mirror holder is a spring,
the carbon fiber tube is a spring,
the L-brackets I added are springs.
the focuser and camera are springs -
so is the spider holding the secondary mirror.
I have added 3 strong springs which hold everything a little tighter
which has improved the performance but I would
prefer it if I could detect no red dot movement in
the laser 45 degree window when moving the OTA from horizontal
left to right or to vertical.
I took a a couple of extra images after I installed the Telrad.
cheers
Allan
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