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Gnuastro 0.5 released

Item posted by Mohammad Akhlaghi <makhlaghi> on Sat 23 Dec 2017 04:26:14 PM UTC.

As a small holiday gift, I am happy to announce the fifth release of Gnuastro (version 0.5).

GNU Astronomy Utilities (Gnuastro) is an official GNU package consisting of various command-line programs and library functions for the manipulation and analysis of astronomical data. All the programs share the same basic command-line user interface for the comfort of both the users and developers. For the full list of Gnuastro's library and programs along with a comprehensive general tutorial, please see the links below, respectively:

Many new features have been added since the fourth release and almost all bugs that were found have been fixed. For the full list of new features, please see the NEWS file below [1]. Some of the highlights are as follows: there is a new "Match" program to match catalogs (in 1D or 2D). NoiseChisel uses signal contiguity to grow the true detections (before it was a blind dilation). This is much more successful in tracing the outer low surface brightness regions. Filtering operators are added to Arithmetic. CosmicCalculator's functions are now available in the library for use in your own programs, and now it can also print single requested calculations (instead of a full list of all calculations). Gnuastro's top webpage is now also available in French.

You will also find a new section in the "Tutorial" chapter of the book ("General program usage tutorial", link above). It contains an extended and pedagogic tutorial to help you get started in using Gnuastro's infra-structure effectively. With the aim of detecting galaxies in an image and estimating their colors, it takes you through most of the programs. Just be patient and follow through the steps to master Gnuastro's powerful features. This tutorial was made as part of the "Exploring the ultra-low surface brightness universe" workshop in the International Space Science Institute (ISSI in Bern, Switzerland). I am very grateful to the hosts and participants for the very fruitful week.

If any of Gnuastro's program are useful in your work, please run the relevant programs with a `--cite' option (it can be different for different programs). Citations are vital for the continued work on Gnuastro, so please don't forget to support us by doing so.

Boud Roukema and Vladimir Markelov contributed to the code of this release. Lucas MacQuarrie, Thérèse Godefroy and the GNU French Translation Team also kindly initiated and are managing the French translation of the top Gnuastro webpage. I am finally very grateful to (in alphabetic order) Leindert Boogaard, Nicolas Bouché, Benjamin Clement, Madusha Gunawardhana, Takashi Ichikawa, Raúl Infante Sainz, Aurélien Jarno, Floriane Leclercq, Alan Lefor, Bob Proulx, Alejandro Serrano Borlaff, Lee Spitler, Ole Streicher, Alfred Szmidt, Ignacio Trujillo and David Valls-Gabaud who provided many great comments, suggestions and bug reports to this release.

Below, you can get the compressed sources and a GPG detached signatures for this release. See [2] for uncompressing Lzip tarballs.      (4.6 MB)      (3.1 MB)

Use a mirror for higher download bandwidth:   (4.6 MB)   (3.1 MB)

The GPG detached signatures are also available below. See [3] for how to verify the integrity of this tarball with the signature.  (833 B)  (833 B)

Here are the MD5 and SHA1 checksums:

  b88cbc593d6a59b0a3bd85b7e81bd4a0  gnuastro-0.5.tar.gz
  2ed4ed0357a373c19291b1c67fd8bd8f  gnuastro-0.5.tar.lz
  d920c0d0796e9e74d06f2682bebe73d79cb960de  gnuastro-0.5.tar.gz
  1dcc6f36e0c1ddf603cbc8d39445d356a39208d8  gnuastro-0.5.tar.lz

This tarball was bootstrapped (initially built) with the tools
below. Note that these are not installation dependencies.

For installation dependencies, please see:

I wish you happy holidays,

Postdoctoral research fellow,
Centre de Recherche Astrophysique de Lyon (CRAL),
Observatoire de Lyon. 9, Avenue Charles André,
Saint Genis Laval (69230), France.

[1] NEWS file for Gnuastro 0.5

New features

Removed features

Changed features

Bug fixes

[2] Using Lzip

Lzip has a much better compression ratio and much better archival features than the common `.gz' or `.xz'. Therefore Gnuastro's stable releases are made in `.gz' (for historical reasons) and `.lz'. The alpha/test releases are only in `.lz'. If you don't have Lzip, can download and install it from its webpage.

If you have GNU Tar, then the single command below should uncompress and un-pack the tarball:

$ tar xf gnuastro-0.5.tar.lz

If the command above doesn't work, you have to un-compress and un-pack it with two separate commands:

$ lzip -d gnuastro-0.5.tar.lz
$ tar xf gnuastro-0.5.tar

[3] Verifying tarballs

Use a .sig file to verify that the corresponding file (without the .sig suffix) is intact.  First, be sure to download both the .sig file and the corresponding tarball.  Then, run a command like this:

$ gpg --verify gnuastro-0.5.tar.gz.sig

If that command fails because you don't have the required public key, then run this command to import it:

  gpg --keyserver --recv-keys 1849814357EFB73A

and rerun the 'gpg --verify' command.

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