darkCorrection¶
-
lsst.ip.isr.darkCorrection(maskedImage, darkMaskedImage, expScale, darkScale, invert=False, trimToFit=False)¶ Apply dark correction in place.
Parameters: - maskedImage :
lsst.afw.image.MaskedImage Image to process. The image is modified by this method.
- darkMaskedImage :
lsst.afw.image.MaskedImage Dark image of the same size as
maskedImage.- expScale : scalar
Dark exposure time for
maskedImage.- darkScale : scalar
Dark exposure time for
darkMaskedImage.- invert :
Bool, optional If True, re-add the dark to an already corrected image.
- trimToFit :
Bool, optional If True, raw data is symmetrically trimmed to match calibration size.
Raises: - RuntimeError
Raised if
maskedImageanddarkMaskedImagedo not have the same size.
Notes
- The dark correction is applied by calculating:
- maskedImage -= dark * expScaling / darkScaling
- maskedImage :