Get a list of Instrument objects. Instruments have a 1:1 mapping with Observations.

### Available end points:

- `/instruments/` - Will list all Instruments in the database
- `/instruments.json` - Will return all Instruments in json format
- `/instruments/<object_id>/` - Returns Instruments object with that id

### Available Methods:

- `GET`
- `HEAD`

### Available filters:

- `title`
- `uuid`
- `keywords`
- `instrumentType`

### How to use filters:

- `/instruments/?title__startwith!=Instrument.title: DETAILS NEEDED`
- `/instruments/?uuid=c7fa005e2095425392b18adbd7b40617`
- `/instruments.json?instrumentType=radiometer`

GET /api/v2/instruments/847/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 847,
    "uuid": "e448141cadd04550aa19dac5601af34d",
    "title": "Advanced Along-Track Scanning Radiometer (AATSR)",
    "abstract": "The Advanced Along-Track Scanning Radiometer (AATSR) measures global Sea Surface Temperature (SST) from space to the highest possible levels of accuracy and stability, as required for climate research and monitoring. It is the third in the ATSR series, and is a payload instrument on ESA's ENVISAT.",
    "keywords": "",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/568/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/569/?format=api"
    ],
    "instrumentType": "radiometer",
    "subInstrument": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2757/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/2756/?format=api"
    ]
}