visir_util_detect_shift - 2012
esorex visir_util_detect_shift [OPTIONS] FILE.sof
Detects beams in a background subtracted multi-beam image,
determines the shifts between different images and their correlation. Images
can be rejected if their correlation is bad.
The files listed in the Set Of Frames (sof-file) must be tagged:
VISIR-chopnod-corrected-file.fits BKG_CORRECTED bad-pixel-mask.fits
STATIC_MASK The output consists of single beam images of the size of the
throw. The shifts will be written int CRPIX[12].
- --template
<str>
- Correlation template used to detect shifts and reject bad images. If none
given an averaged image is used (str; default: ´NONE´). The
full name of this option for the EsoRex configuration file is
visir.visir_util_detect_shift.template [default =
NONE].
- --min-correlation
<float>
- Minimal correlation to the template required to be accepted (float;
default: 0.5). The full name of this option for the EsoRex configuration
file is visir.visir_util_detect_shift.min-correlation [default =
0.5].
- --max-shift
<float>
- Maximal allowed object shift for an image to be accepted (float; default:
10.0). The full name of this option for the EsoRex configuration file is
visir.visir_util_detect_shift.max-shift [default =
10.0].
- --max-mad
<float>
- Maximal allowed median absolute deviation for an image to be accepted.
<= 0 equals no limit (float; default: 0.0). The full name of this
option for the EsoRex configuration file is
visir.visir_util_detect_shift.max-mad [default = 0.0].
- --naverage
<int>
- Number of planes to average before attempting to detect the shifts. (int;
default: 1). The full name of this option for the EsoRex configuration
file is visir.visir_util_detect_shift.naverage [default =
1].
- --method
<str>
- Method to determine beam shifts. xcorrelate: use the cross correlation
shift. brightest: use the position of the brightest pixel (str; default:
´xcorrelate´). The full name of this option for the EsoRex
configuration file is visir.visir_util_detect_shift.method [default
= xcorrelate].
- --no-shift
<bool>
- Sets whether to apply the determined shifts in following recipes. Set to
TRUE of shifts appear too large. (bool; default: False). The full name of
this option for the EsoRex configuration file is
visir.visir_util_detect_shift.no-shift [default =
False].
- --no-reject
<bool>
- If true images with bad statistics will not be rejected and no shift
correction is done (bool; default: True). The full name of this option for
the EsoRex configuration file is
visir.visir_util_detect_shift.no-reject [default =
True].
- --beampos
<str>
- Define the positions of the beams. These positions are cut by the window
to extract the single beam images. Format:
sign:x,y,window;sign:x,y,window;... where sign is "pos" or
"neg" depending on whether the beam is positive or negative. The
window is optional and defines the size of the cut image around the beam.
The default window is the chop throw. E.g.: pos:50,60;neg:50,160; By
default autodetection is attempted. (str; default: ´NONE´).
The full name of this option for the EsoRex configuration file is
visir.visir_util_detect_shift.beampos [default = NONE].
- --eccmax
<float>
- The maximum eccentricity allowed in the combination of the three (in
parallel nod/chopping) or four (in perpendicular nod/chopping) beams. In
parallel mode, three perfectly aligned points spaced with the chopnod
throw will have eccentricity 0, while in perpedicular mode a square with
the chopnod throw as the side length will have eccentricity 0 (float;
default: 3.0). The full name of this option for the EsoRex configuration
file is visir.visir_util_detect_shift.eccmax [default =
3.0].
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 visir pipeline can be downloaded as
a PDF file using the following URL:
- ftp://ftp.eso.org/pub/dfs/pipelines/visir/visir-pipeline-manual-1.4.pdf
An overview over the existing ESO pipelines can be found on the
web page https://www.eso.org/sci/software/pipelines/.
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
https://packages.python.org/python-cpl/index.html for further
information.
The other recipes of the visir pipeline are
visir_img_dark(7), visir_img_ff(7),
visir_img_reduce(7), visir_img_trans(7),
visir_old_img_combine(7), visir_old_img_phot(7),
visir_old_spc_obs(7), visir_old_spc_obs_ech(7),
visir_old_spc_phot(7), visir_old_spc_phot_ech(7),
visir_old_spc_wcal(7), visir_old_spc_wcal_ech(7),
visir_old_util_destripe(7), visir_spc_reduce(7),
visir_util_apply_calib(7), visir_util_clip(7),
visir_util_convert_weight(7), visir_util_img_std_cat(7),
visir_util_join(7), visir_util_qc(7),
visir_util_repack(7), visir_util_run_swarp(7),
visir_util_spc_std_cat(7), visir_util_spc_txt2fits(7),
visir_util_undistort(7)
visir_util_detect_shift 4.4.2
Find beam positions and reject bad images <Julian Tayor>
Please report any problems to Julian Tayor. Alternatively, you may
send a report to the ESO User Support Department
<usd-help@eso.org>.
This file is part of the VISIR Instrument Pipeline Copyright (C)
https://support.eso.org European Southern Observatory
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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
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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
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You should have received a copy of the GNU General Public License
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