One chap recommened wrap the CCD tube in tape to make it a firmer fit - another suggested tap extra holes and insert more screws.
Its the large Lumicon guider designed for C9.25 SCTs - was around $350
Matthew
PS
Guided on the Helix and Sculptor galaxies last night - taking 20 and 40 minute shots, guiding at 5 and 10 second intervals (very dim guide stars) - worked very, very well!
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