remove_skylight

remove_skylight#

excalibuhr.utils.remove_skylight(D_full, V_full, M_bpm, obj_cen, frac_mask, debug=False)[source]#

Remove sky background in a 2D detector image.

Parameters:

  • D_full (array) – cropped image of one order

  • V_full (array) – Variance of the input image accounting for sky background and readout noise

  • M_bpm (array) – bad pixel map corresponding to the detector image

  • obj_cen (float) – location of the star on slit in pixel

  • frac_mask (float) – half width of the trace to be masked in fraction of slit length

Returns:

D_cor, err_cor – image and error after the sky background removal

Return type:

array

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