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/25346/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 25346,
    "uuid": "26b7ccf9c2954e2f87c0bce1ba680b65",
    "title": "BT Tower: O3 and NOx measurements",
    "abstract": "The BT Tower is a 190-m-tall telecommunications tower situated in central London, UK (51°31′17.4″N, 0°8′20.04″W). Mean building height is 8.8 ± 3.0 m within 1−10 km of the tower and 5.6 ± 1.8 m for suburban London beyond this.\r\n\r\nThis dataset collection contains O3 and NOx measurements made at the BT tower (T35 level) sampled from a height of approx 180 metres above the ground. The measurements were made using a TEI 49i analyser and TEI 42CTL analyser.",
    "keywords": "NCAS, BT tower, O3, NOx",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2021-07-26T13:30:42",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/3936/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/25345/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/103937/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/103938/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/103939/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/103940/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/103941/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/103943/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/103944/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/103945/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/103942/?format=api"
    ]
}