Telescope Secondary Mirrot Adjustmen Shim 5mm

I use this to adjust the secondary mirror of my Sharpstar 15028 HNT.
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updated October 2, 2024

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Loosen the screws. Put 3 of the shims behind the front plate to ensure a distance of exactly 5mm. Use a laser collimator to rotate the mirror to centre and then tighten the centre screw. Remove the shims and fine adjust the mirror using the three set srews.

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