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/40273/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 40273,
    "uuid": "f9409f61fcc5494386d52f8efbcf8ddd",
    "title": "CCI/C3S/U Reading:  Sea Surface Temperature from the   Advanced Very High Resolution Radiometer (AVHRR) Level 3 Collated (L3C) Climate Data Record Collection, version 2.1",
    "abstract": "This collection of datasets provides a full time series of Sea Surface Temperature Level 3C data from the Advanced Very High Resolution Radiometer (AVHRR) satellite instruments.  It comprises two datasets, the v2.1 CDR dataset from the ESA Climate Change Initiative and the corresponding ICDR dataset from the Copernicus Climate Change service (C3S).  \r\n\r\nThe ICDR data follows on from the CDR dataset in time, and is intended for use as a single dataset.",
    "keywords": "",
    "discoveryKeywords": [],
    "publicationState": "preview",
    "dataPublishedTime": null,
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/39978/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/196294/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/196295/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/196296/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/196297/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/196298/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/196299/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/196300/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/196301/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/196302/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/196303/?format=api"
    ]
}