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/3502/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 3502,
    "uuid": "2dc3645501db40d38702b5f8c5c0eaf0",
    "title": "Chilbolton Facility for Atmospheric and Radio Research (CFARR) Microwave radiometers",
    "abstract": "A number of microwave radiometers have been constructed by RCRU engineers and installed at Chilbolton. The radiometers measure zenith sky brightness temperature at a number of frequencies, 22.2, 28.8 and 37.5 GHz. Scientists use these measurements to find out the total integrated liquid water path (LWP) and total precipitable water vapour (WVP), in the atmosphere above the radiometers.",
    "keywords": "",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2367/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2368/?format=api"
    ],
    "instrumentType": "instrument",
    "subInstrument": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14911/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14910/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/140424/?format=api"
    ]
}