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
.- expScalescalar
Dark exposure time for
maskedImage
.- darkScalescalar
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.
- maskedImage
- Raises:
- RuntimeError
Raised if
maskedImage
anddarkMaskedImage
do not have the same size.
Notes
- The dark correction is applied by calculating:
maskedImage -= dark * expScaling / darkScaling