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/45766/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 45766,
    "uuid": "1f0e0b8d35d14ea699a4041b10b4a651",
    "title": "ESA Precursors for Aerosols and Ozone Climate Change Initiative (Precursors_cci): L3 SO2 products",
    "abstract": "The Sulfur Dioxide (SO2) Climate Data Record (CDR) product is a Level 3 (L3) SO2 product developed by using satellite data as part of the ESA (European Space Agency) Climate Change Initiative (CCI) Precursors for Aerosols and Ozone project.\r\n\r\nThis collection record includes:\r\n- TROPOMI SO2 daily and monthly v1.0\r\n- GOME SO2 monthly v1.0\r\n- OMI SO2 daily and monthly v1.0",
    "keywords": "",
    "discoveryKeywords": [],
    "publicationState": "working",
    "dataPublishedTime": null,
    "doiPublishedTime": null,
    "member": [
        "https://catalogue.ceda.ac.uk/api/v2/observations/45723/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/observations/45724/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/observations/45725/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218672/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218675/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218669/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218670/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218671/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218678/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218673/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218668/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218676/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218677/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218674/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218679/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218680/?format=api"
    ]
}