FORS_BIAS(7)

💖 FORS_BIAS 💖

okay bestie, sit DOWN, because we're talking about fors_bias, a lil recipe from the fors recipe squad, and it's literally about building you a master bias frame. no cap. let's go 🫶

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✨ NAME ✨

fors_bias — compute the master bias frame 🌸

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🎀 SYNOPSIS 🎀

esorex fors_bias [OPTIONS] FILE.sof

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🦋 DESCRIPTION 🦋

So here's the vibe: this recipe takes your raw BIAS frames and combines them into one single, gorgeous master bias frame. Iconic behavior. And if there are overscan regions present? They get removed from the result. gone. not invited to the party. periodt. 💅

Input files — what you gotta hand over:

• DO category: BIAS
• Type: Raw
• Explanation: Bias frame
• Required: Y (yes bestie, it's required, no skipping 🙈)

Output files — what you get back:

• DO category: MASTER_BIAS
• Data type: FITS image
• Explanation: Master bias frame

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🌈 OPTIONS 🌈

bestie there are six of them and they're all about how the frames get combined. each one also has a full name for the EsoRex configuration file, so you can write it down and be extra about it. iykyk.

• --stack_method <str> — Frames combination method (str; default: minmax). The full name of this option for the EsoRex configuration file is fors.fors_bias.stack_method [default = minmax]. 🎚️
• --minrejection <int> — Number of lowest values to be rejected (int; default: 1). The full name of this option for the EsoRex configuration file is fors.fors_bias.minrejection [default = 1]. 📉
• --maxrejection <int> — Number of highest values to be rejected (int; default: 1). The full name of this option for the EsoRex configuration file is fors.fors_bias.maxrejection [default = 1]. 📈
• --klow <float> — Low threshold in ksigma method (float; default: 3.0). The full name of this option for the EsoRex configuration file is fors.fors_bias.klow [default = 3.0]. ⬇️
• --khigh <float> — High threshold in ksigma method (float; default: 3.0). The full name of this option for the EsoRex configuration file is fors.fors_bias.khigh [default = 3.0]. ⬆️
• --kiter <int> — Max number of iterations in ksigma method (int; default: 999). The full name of this option for the EsoRex configuration file is fors.fors_bias.kiter [default = 999]. 🔁

bestie, note this: 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. 💜

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🔥 SEE ALSO 🔥

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

ftp://ftp.eso.org/pub/dfs/pipelines/fors/fors-pipeline-manual-4.9.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 fors pipeline are fors_align_sky(7), fors_align_sky_lss(7), fors_calib(7), fors_config(7), fors_dark(7), fors_detect_objects(7), fors_detect_spectra(7), fors_extract(7), fors_extract_objects(7), fors_extract_slits(7), fors_flatfield(7), fors_img_science(7), fors_img_screen_flat(7), fors_img_sky_flat(7), fors_normalise_flat(7), fors_photometry(7), fors_pmos_calib(7), fors_pmos_extract(7), fors_pmos_science(7), fors_remove_bias(7), fors_resample(7), fors_science(7), fors_spec_mflat(7), fors_subtract_sky(7), fors_subtract_sky_lss(7), fors_sumflux(7), fors_trace_flat(7), fors_wave_calib(7), fors_wave_calib_lss(7), fors_zeropoint(7). the whole squad fr fr 👑

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⭐ VERSION ⭐

fors_bias 5.5.7

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👑 AUTHOR 👑

Jonas M. Larsen, Carlo Izzo <usd-help@eso.org> — legends, honestly 🫶

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😭 BUG REPORTS 😭

Please report any problems to usd-help@eso.org. Alternatively, you may send a report to the ESO User Support Department <usd-help@eso.org>. (yes it's the same address twice, they really want to hear from you bestie, not a typo 💀)

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🧚 LICENSE 🧚

This file is currently part of the FORS 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 St, Fifth Floor, Boston, MA 02110-1301 USA

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and that's the whole page bestie!! ✨ this is fors_bias version 5.5.7, living its best life in the fors recipes collection, and it says FORS_BIAS(7) at the bottom too, for the ~aesthetic~. now go make yourself a master bias frame, you absolute main character 💖🦋🌸