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/45450/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 45450,
    "uuid": "056aa9b593104de89af12c753e62ed36",
    "title": "GRIM-SAF: in-situ airborne observations by the FAAM BAE-146 aircraft",
    "abstract": "In-situ airborne observations by the FAAM BAE-146 aircraft for GRIM-SAF FAAM Aircraft Project.",
    "keywords": "GRIM-SAF, FAAM, airborne, atmospheric measurments",
    "discoveryKeywords": [],
    "publicationState": "working",
    "dataPublishedTime": "2025-07-14T10:31:01",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/45449/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/45454/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/45458/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/45462/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/45633/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/217424/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/217425/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/217426/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/217427/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/217428/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/217429/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/217430/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/217431/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/217432/?format=api"
    ]
}