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/4345/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 4345,
    "uuid": "e2d3ce57cfe748ffba84f9714c8ab3e5",
    "title": "Cryogenic Limb Array Etalon Spectrometer (CLAES)",
    "abstract": "The Cryogenic Limb Array Etalon Spectrometer (CLAES) is an instrument on board the UARS satellite launched in 1991 which measured global temperature, pressure, O3, H2O, CH4, N2O, NO, NO2, N2O5, HNO3, ClONO2, CFCl3, CF2Cl2 and aerosol extinction. These measurements are analyzed to better understand the photochemical, radiative, and dynamical processes taking place in the ozone layer.",
    "keywords": "",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2917/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/2919/?format=api"
    ],
    "instrumentType": "instrument",
    "subInstrument": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/20630/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/20629/?format=api"
    ]
}