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/45688/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 45688,
    "uuid": "ea10a8b33cd34d3b80e57c0f6a06f41a",
    "title": "ESA Precursors for Aerosols and Ozone Climate Change Initiative (Precursors_cci): L3 HCHO products",
    "abstract": "The Formaldehyde (HCHO) Climate Data Record (CDR) product is a Level 3 (L3) HCHO 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\nMonthly L3 HCHO from TROPOMI, version 2.0",
    "keywords": "",
    "discoveryKeywords": [],
    "publicationState": "",
    "dataPublishedTime": null,
    "doiPublishedTime": null,
    "member": [
        "https://catalogue.ceda.ac.uk/api/v2/observations/45291/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218381/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218370/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218371/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218372/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218373/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218374/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218375/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218369/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218376/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218377/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218378/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218379/?format=api",
        "https://catalogue.ceda.ac.uk/api/v2/rpis/218380/?format=api"
    ]
}