---
name: "astscript-radial-profile"
section: "1"
platform: "linux"
package: "gnuastro"
version: "0.23-2+b3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/astscript-radial-profile"
---

# astscript-radial-profile(1)

Create a radial profile of an object in an image

## NAME

astscript-radial-profile - Create a radial profile of an object in an image

## SYNOPSIS

**astscript-radial-profile** \[*OPTION*\] *FITS-files*

## DESCRIPTION

This script is part of GNU Astronomy Utilities 0.23.

This script will consider the input image for constructing the radial profile around a given center with elliptical apertures.

For more information, please run any of the following commands. In particular the first contains a very comprehensive explanation of this script's invocation: expected input(s), output(s), and a full description of all the options.

- Inputs/Outputs and options:

  $ info astscript-radial-profile

- Full Gnuastro manual/book:

  $ info gnuastro

If you couldn't find your answer in the manual, you can get direct help from experienced Gnuastro users and developers. For more information, please run:

-

  `$ info help-gnuastro`

### astscript-radial-profile options:

-

  Input:

- **-h**, **--hdu**=*STR*

  HDU/extension of all input FITS files.

- **-O**, **--mode**=*STR*

  Coordinate mode: img or wcs.

- **-c**, **--center**=*FLT*,FLT

  Coordinate of the center along 2 axes.

- **-R**, **--rmax**=*FLT*

  Maximum radius for the radial profile (in pixels).

- **-Q**, **--axis-ratio**=*FLT*

  Axis ratio for ellipse profiles (A/B).

- **-a**, **--azimuth**=*FLT*,FLT

  Azimuthal angles range (from the major axis).

**-p**, **--position-angle**=*FLT* Position angle for ellipse profiles.

- **-g**, **--polar**

  Polar plot (azimuth angle vs. radius).

- **-s**, **--sigmaclip**=*FLT*,FLT

  Sigma-clip multiple and tolerance.

- **-z**, **--zeropoint**=*FLT*

  Zeropoint magnitude of input dataset.

- **-Z**, **--zeroisnotblank**

  0\.0 in float or double images are not blank.

-

  Output:

- **-o**, **--output**

  Output table with the radial profile.

- **-t**, **--tmpdir**

  Directory to keep temporary files.

- **-k**, **--keeptmp**

  Keep temporal/auxiliar files.

- **-m**, **--measure**=*STR*

  Measurement operator (mean, sigclip-mean, etc.).

- **-P**, **--precision**=*INT*

  Number of digits after decimal point for radius.

- **-v**, **--oversample**=*INT*

  Oversample for higher resolution radial profile.

- **-u**, **--undersample**=*INT*

  Undersample for lower resolution radial profile.

- **-i**, **--instd**=*FLT*/STR

  Sky standard deviation per pixel, as a single number or as the filename.

- **-d**, **--stdhdu**=*STR*

  HDU/extension of the sky standard deviation image.

-

  Operating mode:

- \-?, **--help**

  Print this help list.

- **--cite**

  BibTeX citation for this program.

- **-q**, **--quiet**

  Don't print any extra information in stdout.

- **-V**, **--version**

  Print program version.

Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.

GNU Astronomy Utilities home page: http://www.gnu.org/software/gnuastro/

## REPORTING BUGS

Report bugs to bug-gnuastro@gnu.org.

## COPYRIGHT

Copyright © 2020-2024 Free Software Foundation, Inc. License GPLv3+: GNU General public license version 3 or later.\
 This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

Written/developed by Raul Infante-Sainz

## SEE ALSO

The full documentation for **astscript-radial-profile** is maintained as a Texinfo manual.  If the **info** and **astscript-radial-profile** programs are properly installed at your site, the command

-

  **info astscript-radial-profile**

should give you access to the complete manual.