Scroll to navigation



hawki_step_combine - (OBSOLETE) Jitter image combination recipe


esorex hawki_step_combine [OPTIONS] FILE.sof


(OBSOLETE) hawki_step_combine -- hawki combine jitter images.

The files listed in the Set Of Frames (sof-file) must be tagged: science-file.fits DIST_CORRECTED or science-file.fits BKG_SUBTRACTED or bpm-file.fits BPM (optional) bkg_bpm-file.fits BKG_BPM (optional) offsets-file.fits OFFSETS_REFINED (optional) The recipe creates as an output: hawki_step_combine.fits (COMBINED): The recipe does the following steps: -Allocate an image with the proper combined size
(depends on parameters --comb_meth and --borders) -Retrieve the offsets either from the offsets-file.fits or from the header -For each combined pixel, the contribution of each individual frame
is added using a resampling kernel. If any of the pixels involved in
the resampling is a bad pixel (defined in bpm-file.fits), it is not
taken into account.

With the remaining pixels a minmax rejection is performed Return code: esorex exits with an error code of 0 if the recipe completes successfully or 1 otherwise


Maximum offset allowed (int; default: 1500). The full name of this option for the EsoRex configuration file is hawki.hawki_step_combine.offset_max [default = 1500].
Final size of combination (union / inter / first) (str; default: ´union´). The full name of this option for the EsoRex configuration file is hawki.hawki_step_combine.comb_meth [default = union].
Low and high number of rejected values (str; default: ´1,1´). The full name of this option for the EsoRex configuration file is hawki.hawki_step_combine.rej [default = 1,1].
Border pixels trimmed (int; default: 4). The full name of this option for the EsoRex configuration file is hawki.hawki_step_combine.borders [default = 4].
Resampling kernel (default/tanh/sinc/sinc2/lanczos/hamming/hann) (str; default: ´default´). The full name of this option for the EsoRex configuration file is hawki.hawki_step_combine.resamp_kernel [default = default].

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_compute_bkg(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_combine 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_combine