Photo library on Time Capsule and want iPhoto to recognise it rather than import to Mac Mini small Hard drive

Question

As heading states, I have 100Gb of photos and want to have them "sorted" and viewable through iPhoto. at the moment when i add photos it is importing them from the TC to my mini's hard drive duplicating the pictures and using up valuable space. Is there a way of pointing iPhoto to the photo folder on TC as you would music and videos for iTunes library?

Answer 1

Yes there is but you shouldn't.
Here's why:
1. Is this a wireless connection? If you're trying to edit the Library (that is, make albums, move photos around, keyword, make books or slideshows etc.) or edit individual photos in it via Wireless be very careful. Dropouts are a common fact of wireless networking, and should one occur while the app is writing to the database then your Library will be damaged. Simply, I would not do this with my Libraries. 
Problems with a Referenced Library
A Referenced Library is when iPhoto is NOT copying the files into the iPhoto Library when importing. The files are then stored where ever you put them and not in the Library package. In this scenario you are responsible for the File Management.
This is an attractive option for some users at face value, but it contains a significant number of issues that you might want to consider before making the decision to run a Referenced Library
How to do it:
iPhoto -> Preferences -> Advanced and uncheck the box at 'Copy items to the iPhoto Library'
Now when you import iPhoto makes an alias in the Library Package that points to the stored file. Note: iPhoto still creates a thumbnail of the image and it makes a Preview of edited photos inside the Library Package.
Issues?
1. You are responsible for file management. That's more work:
You must first move the files from your camera to the storage location before importing.
If you want to delete files then you must first trash them from iPhoto and then afterwards find them in your storage and trash them.
Thereafter, you cannot move the files on early versions of iPhoto at all, on iPhoto 08 and later you may move them on the same Volume or Disk. If you move them to a new volume or disk the aliases my break. If they are on an different volume and you move them the aliases will break.
You cannot rename the files.
Migrating: moving to a new machine, moving the files to another disk are all a lot more complex.
2. You gain no extra functionality from running a Referenced Library. Nothing. This is just storage. You still manage the files via iPhoto. You edit them with iPhoto or via iPhoto's External Editor setting, otherwise you're changes will not be available in iPhoto. You don't save  byte of storage space.
3.  If you have the Library on one volume and the photos on another you if anything changes in the path to a file (Like if you upgrade your machine, move the files on the NAS or on to another one?) then the alias will break, and you'll have to repair it manually. For every photo in the Library. One at a time.
You can run a Managed library from an external disk. Make sure the drive is formatted Mac OS Extended (Journaled)
1. Quit iPhoto
2. Copy the iPhoto Library from your Pictures Folder to the External Disk.
3. Hold down the option (or alt) key while launching iPhoto. From the resulting menu select 'Choose Library' and navigate to the new location. From that point on this will be the default location of your library.
4. Test the library and when you're sure all is well, trash the one on your internal HD to free up space.