John,
to move your library to a different drive you need to do two things:
- Drag the library (in the Finder) to the new drive to copy it to that location.
- Double click it to launch Aperture on the copied Library and select all images in the Browser (best in the "Photos" view). Then use the command "File > Consolidate". This will move all referenced original image files into the copied library.
But there will be a complication, if you want to use your TimeCapsule as external drive with your library, see this Apple Support article:
Use locally mounted Mac OS X Extended volumes for your Aperture library
Your Aperture library needs to be on a volume formatted MacOS X Extended. Aperture 3.4 will refuse to recognize the library, if it is on a volume with a different formatting. Afaik, a TimeCapsule has a different formatting. You could connect an external drive with MacOS X Extended formatting to the TimeCapsule, however, or put a writable disk image onto the TimeCapsule and store the Aperture Library there.
The second problem will be the network access. This will slow down Aperture, and you may risk data loss, as stated in the above support article.
It would be easier and faster to use a directly connected external disk to store your library.
Also, it is strongly recommended that the Aperture library be stored on a locally mounted hard drive. Storing the Aperture library on a network share can also lead to poor performance, data corruption, or data loss.
Regards
Léonie