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Dave
I just remembered that if you use the Orion Guidescope with say the Orion StarShoot Autoguider CCD then you must use an extension tube that is aro 30mm to rack out the end part to enable the guidescope to come to focus - when purchased from Bintel the kit does include the extension tube of the correct length
I've moved away from using the Orion Guidescope and use the 9x50mm Finder that comes with the OTA - modded at the rear end to take the guider CCD
See attached pix
BTW whereabouts are you in Perth?
HTH
Cheers
Bill
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