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Yes. It's basically a star diagonal where the mirror moves out of the light path and allows a camera to be mounted on the other face. The Meade one comes with a spacer and helical focusser to allow you to get both the guide eyepiece and the CCD in focus. Once this is done you can then flip between them to check the object is still in the centre of the field etc before exposure.
Downside is that it takes up about 50 -60mm of back focus so is more suitable for a SC telescope than say a newtonian.
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