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/3518/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 3518,
    "uuid": "9712fa009a6c451e988a042607b2a440",
    "title": "Chilbolton Facility for Atmospheric and Radio Research (CFARR) South Wonston to Sparsholt 5 km 56 GHz Radio Link",
    "abstract": "Monitoring is taking place of the signal levels of several links at frequencies of 38, 54 and 56 Ghz which run from the South Wonston water tower on the A34 to Sparsholt College. The links are within coverage of the Chilbolton Advanced Meteorological Radar.",
    "keywords": "",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2379/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2380/?format=api"
    ],
    "instrumentType": "instrument",
    "subInstrument": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14951/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/14950/?format=api"
    ]
}