FORS_ZEROPOINT(7)

📦 version 5.5.7, in ubuntu jammy, ubuntu noble

💖 FORS_ZEROPOINT(7) 💖

okay bestie, so this is the manual page for fors_zeropoint, part of the fors recipes fam. Sit down, grab a boba, we're computing a zeropoint and we're gonna slay while we do it. 🎀

✨ NAME ✨

fors_zeropoint — Compute zeropoint. That's it, that's the job. Iconic.

🌸 SYNOPSIS 🌸

esorex fors_zeropoint [OPTIONS] FILE.sof

🦋 DESCRIPTION 🦋

Alright so first things first, the input files, i.e. the little set list of what you gotta feed this recipe before it'll do anything. The way that it needs all of these categories present:

💅 Input files

  • STANDARD_IMG — Type: FITS image. Explanation: Phot. standard field. Number: 1
  • MASTER_BIAS — Type: FITS image. Explanation: Master bias. Number: 1
  • MASTER_SKY_FLAT_IMG — Type: FITS image. Explanation: Master sky flatfield. Number: 1
  • FLX_STD_IMG — Type: FITS table. Explanation: Standard star catalog. Number: 1+ (yes bestie, one or MORE, she's flexible ✨)
  • PHOT_TABLE — Type: FITS table. Explanation: Filter ext. coeff, color. Number: 1

🫶 Output files

And here's what she hands back to you when she's done being the main character:

  • SOURCES_STD_IMG — Data type: FITS image. Explanation: Unfiltered SExtractor output
  • ALIGNED_PHOT — Data type: FITS table. (no explanation given, she's mysterious like that 💀)
  • PHOT_BACKGROUND_STD_IMG — Data type: FITS image. Explanation: Reduced science image background
  • STANDARD_REDUCED_IMG — Data type: FITS image. Explanation: Reduced std image

🎀 OPTIONS 🎀

ngl there are nine of these and each one is a whole vibe. Every single one has a default, and every single one has a full EsoRex configuration file name, so write these down fr fr.

  • --sex_exe <str> — SExtractor executable (str; default: /usr/bin/source-extractor). The full name of this option for the EsoRex configuration file is fors.fors_zeropoint.sex_exe [default = /usr/bin/source-extractor].
  • --sex_config <str> — SExtractor configuration file (str; default: /usr/share/cpl-plugins/fors-5.5.7/config/fors.sex). The full name of this option for the EsoRex configuration file is fors.fors_zeropoint.sex_config [default = /usr/share/cpl-plugins/fors-5.5.7/config/fors.sex].
  • --sex_mag <str> — SExtractor magnitude (str; default: MAG_APER). The full name of this option for the EsoRex configuration file is fors.fors_zeropoint.sex_mag [default = MAG_APER].
  • --sex_magerr <str> — SExtractor magnitude error (str; default: MAGERR_APER). The full name of this option for the EsoRex configuration file is fors.fors_zeropoint.sex_magerr [default = MAGERR_APER].
  • --sex_radius <int> — Background error map median filter radius (unbinned pixels) (int; default: 64). The full name of this option for the EsoRex configuration file is fors.fors_zeropoint.sex_radius [default = 64].
  • --maxoffset <float> — Maximum acceptable offset between the image and catalogue WCS (pixels) (float; default: 150.0). The full name of this option for the EsoRex configuration file is fors.fors_zeropoint.maxoffset [default = 150.0].
  • --magcutE <float> — Zeropoint absolute cutoff (magnitude) (float; default: 1.0). The full name of this option for the EsoRex configuration file is fors.fors_zeropoint.magcutE [default = 1.0].
  • --magcutk <float> — Zeropoint kappa rejection parameter (float; default: 5.0). The full name of this option for the EsoRex configuration file is fors.fors_zeropoint.magcutk [default = 5.0].
  • --magsyserr <float> — Systematic error in magnitude (float; default: 0.01). The full name of this option for the EsoRex configuration file is fors.fors_zeropoint.magsyserr [default = 0.01].
👑 Also important bestie: 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. Periodt.

🌈 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.

And the other recipes of the fors pipeline, aka the rest of the friend group, are: fors_align_sky(7), fors_align_sky_lss(7), fors_bias(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). All icons, no filler. 💖

⭐ VERSION ⭐

fors_zeropoint 5.5.7

🧚 AUTHOR 🧚

Jonas M. Larsen <usd-help@eso.org> — thank you for your service king 🫡

💀 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>. Same inbox, two ways in, lowkey efficient. ✨

💜 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. (like, fr fr, no warranty, don't come for her 😭)

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

and that's the whole page bestie 💅 this was fors_zeropoint version 5.5.7, dated 5.5.7 in the fors_zeropoint corner of the manual — slay, go compute your zeropoint, and remember: read the docs, love yourself, hydrate. 🦋🌸✨

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