# Auto Exposure Flats

**GET /flats/auto-exposure**

Start capturing auto exposure flats. This requires the camera to be connected. NINA will pick the best exposure time for a fixed flat panel brightness. Any omitted parameter will default to the instruction default.


## Servers
- V2 api server: http://localhost:1888/v2/api (V2 api server)



## Parameters


### Query parameters
- **count** (integer)
  The number of flats to capture
- **brightness** (number)
  The flat panel brightness
- **minExposure** (number)
  The minimum exposure time to use for the flats, in seconds
- **maxExposure** (number)
  The maximum exposure time to use for the flats, in seconds
- **histogramMean** (number)
  The mean to use for the histogram
- **meanTolerance** (number)
  The tolerance to use for the histogram
- **filterId** (integer)
  The filter to use for the flats. The current filter will be used if this is not specified
- **binning** (string)
  The binning to use for the flats
- **gain** (integer)
  The gain to use for the flats. The camera gain will be used if this is not specified
- **offset** (integer)
  The offset to use for the flats. The camera offset will be used if this is not specified
- **keepClosed** (boolean)
  Whether to keep the flat panel closed after taking the flats


## Responses
### 200
Successful response

#### Body: application/json (object)
- **Response** (string)

- **Error** (string)

- **StatusCode** (integer)

- **Success** (boolean)

- **Type** (string)


### 400
Could not start the process

#### Body: application/json (object)
- **Response** (string | array[string])

- **Error** (string)

- **StatusCode** (integer)

- **Success** (boolean)

- **Type** (string)


### 500
Internal server error, Unknown error

#### Body: application/json (object)
- **Response** (string)

- **Error** (string)

- **StatusCode** (integer)

- **Success** (boolean)

- **Type** (string)



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