Hello Jon Elster,
Thank you for your interest in RadCarousel.
RadForms cannot be added as RadCarousel items by design. However, it's easy to add images in the RadCarousel items. For additional information, please refer to the Quick Start Framework Carousel samples.
About the tab control "Images" - each TabItem has a GetItemBitmap method that returns an image of the item. You can then add these images to the carousel.
I hope this helps. Contact me again if you have further questions.
All the best,
the Telerik team