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1ponders is right. A focal reducer for the 8", a parrallel port or USB adapter from Shoestring astronomy, a webcam and laptop running guidedog,guidemaster or phdguiding will see you there. If not then 2x barlow on your guidescope and you can manually guide. The latter can be a real pain when fatigue sets in or an aching neck and you hit the wrong button on your handpaddle and ruin a 15min-1 hr guided shot.
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