Get a list of Collections objects. Collections have a 1:1 mapping with Observations.

### Available end points:

- `/observationcollections/` - Will list all Collections in the database
- `/observationcollections.json` - Will return all Collections in json format
- `/observationcollections/<object_id>/` - Returns Collections object with that id

### Available Methods:

- `GET`
- `HEAD`

### Available filters:

- `uuid`
- `title`
- `keywords`
- `discoveryKeywords`
- `publicationState`

### How to use filters:

- `/observationcollections/?uuid=ab4ca8d019d148f78afba1cd20872bdd`

- `/observationcollections.json?publicationState=citable`

GET /api/v2/observationcollections/18290/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 18290,
    "uuid": "96410726603c455d8901ade773368c92",
    "title": "SALSTICE: in-situ airborne observations by the FAAM BAE-146 aircraft",
    "abstract": "In-situ airborne observations by the FAAM BAE-146 aircraft for SALSTICE  Semi-Arid Land Surface Temperature IASI Cal/val.",
    "keywords": "SALSTICE, FAAM, airborne, atmospheric measurments",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2015-03-23T20:34:07",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/18289/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/18294/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/18302/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/18406/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/18410/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/18446/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/18450/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/18454/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/18458/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/18462/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/18466/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/69160/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/69152/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/69153/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/69159/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/69151/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/69156/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/69157/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/69158/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/69154/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/69155/?format=api"
    ]
}