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/5011/?format=api
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

{
    "ob_id": 5011,
    "uuid": "ba212a54919d4a8c84707cf9bb6ff92d",
    "title": "UEA: Differential Optical Absorption Spectrometer (DOAS)",
    "abstract": "In atmospheric chemistry, differential optical absorption spectroscopy (DOAS) is used to measure concentrations of trace gases. When combined with basic optical spectrometers such as prisms or diffraction gratings and automated, ground-based observation platforms, what we have is a cheap and powerful means for the measurement of such trace gas species as ozone and nitrogen dioxide.\r\n\r\nThis instrument is owned and operated by the University of East Anglia",
    "keywords": "doas, uea, ozone, no2",
    "identifier_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/3324/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/identifiers/3325/?format=api"
    ],
    "instrumentType": "spectrometer",
    "subInstrument": [],
    "responsiblepartyinfo_set": [
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/56177/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/22526/?format=api",
        "https://api.catalogue.ceda.ac.uk/api/v2/rpis/22527/?format=api"
    ]
}