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/5404/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 5404,
    "uuid": "a0c7a4c46a83992cfdf9820a4b253923",
    "title": "NCAS Long Term Observations of atmospheric dynamics and composition",
    "abstract": "The UK's Natural Environment Research Council's (NERC) National Centre for Atmospheric Sciences (NCAS) operates a suite of instrumentation to monitor the atmospheric dynamics and composition of the atmosphere. This dataset brings together all the long term routine observations made by NCAS instruments covering surface based instruments as well as remote sensing instruments such as radars and lidars. Some of the instruments may also be deployed elsewhere on field campaigns, for which the data will be available under the associated field campaign dataset. Links are also available to pages describing the instruments from which links to all data from that particular instrument can be found.",
    "keywords": "Atmosphere, Lidars, Radar",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2002-04-10T13:21:58",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/5405/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/5409/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/5412/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/5415/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/5418/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/5421/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/5424/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/5427/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/5430/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/12411/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/27406/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/27408/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/31948/?format=api"
    ],
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/3524/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/3523/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/23696/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/23698/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/23699/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/23700/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/23702/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43101/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/43102/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/23697/?format=api"
    ]
}