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/24950/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 24950,
    "uuid": "39cc5db2889348f888b824520316e9d2",
    "title": "Measurements of N2O5, ClNO2, HCOOH, HNO3 and HCN at the Weybourne Atmospheric Observatory",
    "abstract": "Chemical ionisation mass spectrometer (CIMS) measurements of N2O5, ClNO2 and other halogenated species to understand the overall oxidation budget at the Weybourne Atmospheric Observatory rural marine site.\r\n",
    "keywords": "CIMS, BBCEAS, Weybourne, N2O5, ClNO2, HCOOH, HNO3, HCN",
    "discoveryKeywords": [
        1138
    ],
    "publicationState": "published",
    "dataPublishedTime": "2017-09-12T10:42:58",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/15442/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/24947/?format=api"
    ],
    "identifier_set": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102137/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102135/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102136/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102138/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102139/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102140/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102141/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/105437/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102134/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102142/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102143/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/102144/?format=api"
    ]
}