astrowisp.background module
Class Inheritance Diagram
Interface to the AstroWISP background library.
- class astrowisp.background.BackgroundExtractor(image, inner_radius, outer_radius, error_confidence=0.68)[source]
Bases:
object
Measure the background level for each source in an image.
- image
The image being processed.
- inner_radius
The size of the aperture aronud each source within which pixels are excluded from background measurement.
- outer_radius
The outer rim of the aperture around each source within which unrejected pixels are included in the background measurement.
- error_confidence
The confidence level to use for estimating the background error.
- __call__(source_x, source_y)[source]
Measure the background under the sources with the given coordinates.
- Parameters:
source_x – The x coordinates of the sources within the image.
source_y – The y coordinates of the sources within the image.
- Returns:
- numpy.array:
The estimate of the background under each source in the same order as the input sources.
- numpy.array:
The estimate of the uncertainty in the background under each source in the same order as the input sources.
- numpy.array:
The number of pixels which were used to derive the background and its uncertainty.
- Return type:
- __del__()[source]
Destroy the image and extractor created in
__init__().