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hawki_step_compute_bkg - (OBSOLETE) Background computing utility


esorex hawki_step_compute_bkg [OPTIONS] FILE.sof


(OBSOLETE) hawki_step_compute_bkg -- hawki background computation utility.

This recipe will create the associated background images for a given set of object images. If there are sky images, these will be used to compute the background, otherwise, the background is computed using a running mean on the object images. An optional mask can be supplied for the running mean.

The files listed in the Set Of Frames (sof-file) must be tagged: obj_basic_cal-file.fits BASIC_CALIBRATED or sky_basic_cal-file.fits SKY_BASIC_CALIBRATED and optionally for object masking: object_mask-file.fits OBJ_MASK offsets.fits OFFSETS_REFINED distortion_x.fits DISTORTION_X distortion_y.fits DISTORTION_Y


Minimum number of jitter frames to use the running median (int; default: 10). The full name of this option for the EsoRex configuration file is hawki.hawki_step_compute_bkg.nmin_comb [default = 10].
Number of images at both sides of the current ima to use for bkg in running median (int; default: 7). The full name of this option for the EsoRex configuration file is hawki.hawki_step_compute_bkg.nhalf_window [default = 7].
The number of frames with low level to reject (int; default: 2). The full name of this option for the EsoRex configuration file is hawki.hawki_step_compute_bkg.rejlow [default = 2].
The number of frames with high level to reject (int; default: 2). The full name of this option for the EsoRex configuration file is hawki.hawki_step_compute_bkg.rejhigh [default = 2].

Note that it is possible to create a configuration file containing these options, along with suitable default values. Please refer to the details provided by the 'esorex --help' command.


The full documentation for the hawki pipeline can be downloaded as a PDF file using the following URL:

An overview over the existing ESO pipelines can be found on the web page

Basic documentation about the EsoRex program can be found at the esorex (1) man page.

It is possible to call the pipelines from python using the python-cpl package. See for further information.

The other recipes of the hawki pipeline are hawki_cal_dark(7), hawki_cal_distortion(7), hawki_cal_flat(7), hawki_cal_zpoint(7), hawki_dark_combine(7), hawki_detector_noise(7), hawki_linearity_analyse(7), hawki_sci_jitter(7), hawki_science_postprocess(7), hawki_science_process(7), hawki_standard_process(7), hawki_step_apply_dist(7), hawki_step_basic_calib(7), hawki_step_combine(7), hawki_step_detect_obj(7), hawki_step_photom_2mass(7), hawki_step_refine_offsets(7), hawki_step_stats(7), hawki_step_stitch(7), hawki_step_subtract_bkg(7), hawki_tec_filtchk(7), hawki_twilight_flat_combine(7), hawki_util_gendist(7), hawki_util_stdstars(7)


hawki_step_compute_bkg 2.4.11


ESO Pipeline Group <>


Please report any problems to Alternatively, you may send a report to the ESO User Support Department <>.


This file is part of the HAWKI Instrument Pipeline Copyright (C) 2002,2011 European Southern Observatory

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

2.4.11 hawki_step_compute_bkg