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/8455/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 8455,
    "uuid": "4f574acb1c1c2e0a0c410ab0b4812c3f",
    "title": "National Centre for Earth Observation (NCEO): Sea Ice Elevation and Thickness and Ice Sheet Elevation Change Data",
    "abstract": "Theme 5 - Cryosphere and Polar Oceans - of the National Centre for Earth Observation (NCEO) is aimed at resolving uncertainties in future climate and sea-level arising from behaviour of the cryosphere.  The data brings together altimetry, interferometry and gravimetry from satellites, coupled with numeric models. Ice thickness data used by Katharine Giles, Seymour Laxon and Andy Ridout in their paper \"Circumpolar thinning of Arctic sea ice following the 2007 record ice extent minimum\" (Geophysical Research Letters, Vol. 35, L22502, doi:10.1029/2008GL035710, 2008) are part of this dataset along with others to be submitted to the NEODC at a later time.",
    "keywords": "NCEO, Ice, Cryosphere",
    "discoveryKeywords": [
        1138,
        1142
    ],
    "publicationState": "published",
    "dataPublishedTime": "2011-02-03T15:33:13",
    "doiPublishedTime": null,
    "member": [
        "https://api.catalogue.ceda.ac.uk/api/v2/observations/8456/?format=api"
    ],
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/5402/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/5403/?format=api"
    ],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42049/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33593/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33594/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33592/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33595/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33596/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/46839/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42044/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42045/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/33600/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42047/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/55006/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/42048/?format=api"
    ]
}