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[info-gnuastro] Gnuastro 0.4.108 (alpha) released


From: Mohammad Akhlaghi
Subject: [info-gnuastro] Gnuastro 0.4.108 (alpha) released
Date: Sat, 9 Dec 2017 22:30:06 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0

Dear all,

I am happy that the fifth release of Gnuastro is almost ready and will be
released in a week. To confirm that it is as bug-free as possible, I am
releasing version 0.4.108 (108 Git commits after the fourth release). I
would be grateful if you could try it out and inform us of any crashes or
un-expected behavior.

Compared to the previous alpha-release (0.4.54 on November 2nd), Gnuastro
now has a new program called "Match". You can use it to match catalogs in
1D (for example wavelength) or 2D (for example RA and Dec or pixel
positions in an image). In the future, this program will also match and
register images (your help would of course be very welcome!). NoiseChisel
can now also take the convolved image (instead of the kernel) as
input. Avoiding convolution can greatly help speed up your tests on
NoiseChisel's other parameters because convolution is usually the single
most time consuming step on larger datasets in NoiseChisel. See the
NoiseChisel section of the book for best usage instructions.

You will also find a new section in the "Tutorial" chapter of the book
("General program usage tutorial"). It contains an extended and pedagogic
tutorial to help you get started in using Gnuastro 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 and benefit from them. 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. Citations are vital for the
continued work on Gnuastro, so please don't forget to support us by doing
so.

Below, you can get the compressed sources and a GPG detached signature for
this release (see [*] for how to verify the integrity of this tarball with
the signature). See [**] for uncompressing Lzip tarballs.

  http://alpha.gnu.org/gnu/gnuastro/gnuastro-0.4.108-509b.tar.lz
  http://alpha.gnu.org/gnu/gnuastro/gnuastro-0.4.108-509b.tar.lz.sig

Here are the MD5 and SHA1 checksums:

  e6c9cf75c0a3e4c023cdaf299fde6a85  gnuastro-0.4.108-509b.tar.lz
  fa95b5497bad63d4c5d3033d1d7b6bdb57d4dd73  gnuastro-0.4.108-509b.tar.lz

I am very grateful to Boud Roukema, Vladimir Markelov and Lucas MacQuarrie
for their direct contributions to Gnuastro's source since version 0.4. I
would also like to acknowledge the great ideas, suggestions and bug reports
of (in alphabetical order) Leindert Boogaard, Benjamin Clement, Nicolas
Bouché, Madusha Gunawardhana, Aurélien Jarno, Takashi Ichikawa, Raúl
Infante Sainz, Floriane Leclercq, Alan Lefor, Alejandro Serrano Borlaff,
Lee Spitler, Ole Streicher and David Valls-Gabaud.

This tarball was bootstrapped (initially built) with these tools:
  Texinfo 6.5
  Autoconf 2.69
  Automake 1.15.1
  Help2man 1.47.5
  Gnulib v0.1-1715-gbdd371624
  Autoconf archives v2017.09.28-14-g2445b89
Note that these are not installation dependencies, for those, please see
https://www.gnu.org/software/gnuastro/manual/html_node/Dependencies.html

Cheers,
Mohammad

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





[*] 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-0.4.108-509b.tar.lz.sig

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

  $ gpg --keyserver keys.gnupg.net --recv-keys 16A8A4B2AEC42AFF

and rerun the 'gpg --verify' command.





[**] The alpha-release tarballs are only made with the Lzip compression
algorithm (`.lz'). Lzip has a much better compression ratio and much better
archival features than `.gz' or `.xz'. You need to install Lzip from its
webpage:

  http://www.nongnu.org/lzip/lzip.html

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

  $ tar xf gnuastro-0.4.108-509b.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-0.4.108-509b.tar.lz
  $ tar xf gnuastro-0.4.108-509b.tar



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